diff --git a/src/components/Groups/GroupDetail/GroupDetail.js b/src/components/Groups/GroupDetail/GroupDetail.js
index 8a702c145..ea78b406e 100644
--- a/src/components/Groups/GroupDetail/GroupDetail.js
+++ b/src/components/Groups/GroupDetail/GroupDetail.js
@@ -20,7 +20,7 @@ const GroupDetail = ({
     parentGroupId,
     isPublic = false,
     childGroups,
-    adminId,
+    primaryAdminsIds,
     ...group
   },
   groups,
@@ -131,7 +131,7 @@ const GroupDetail = ({
             groupId={id}
             users={supervisors}
             isAdmin={isAdmin}
-            mainAdminId={adminId}
+            primaryAdminsIds={primaryAdminsIds}
             isLoaded={supervisors.length === group.supervisors.length}
           />
         </Box>
@@ -151,7 +151,8 @@ GroupDetail.propTypes = {
     }),
     threshold: PropTypes.number,
     isPublic: PropTypes.bool,
-    supervisors: PropTypes.array.isRequired
+    supervisors: PropTypes.array.isRequired,
+    primaryAdminsIds: PropTypes.array.isRequired
   }),
   groups: PropTypes.object.isRequired,
   publicGroups: ImmutablePropTypes.map.isRequired,
diff --git a/src/components/Groups/RemoveGroupAdminButton/RemoveGroupAdminButton.js b/src/components/Groups/RemoveGroupAdminButton/RemoveGroupAdminButton.js
new file mode 100644
index 000000000..3a9de31c1
--- /dev/null
+++ b/src/components/Groups/RemoveGroupAdminButton/RemoveGroupAdminButton.js
@@ -0,0 +1,20 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { FormattedMessage } from 'react-intl';
+import Button from '../../widgets/FlatButton';
+import Icon from 'react-fontawesome';
+
+const RemoveGroupAdminButton = ({ onClick, ...props }) =>
+  <Button {...props} onClick={onClick} bsStyle="danger" className="btn-flat">
+    <Icon name="user-secret" />{' '}
+    <FormattedMessage
+      id="app.groups.removeGroupAdminButton"
+      defaultMessage="Remove group admin"
+    />
+  </Button>;
+
+RemoveGroupAdminButton.propTypes = {
+  onClick: PropTypes.func.isRequired
+};
+
+export default RemoveGroupAdminButton;
diff --git a/src/components/Groups/RemoveGroupAdminButton/index.js b/src/components/Groups/RemoveGroupAdminButton/index.js
new file mode 100644
index 000000000..6b3acf5d1
--- /dev/null
+++ b/src/components/Groups/RemoveGroupAdminButton/index.js
@@ -0,0 +1 @@
+export default from './RemoveGroupAdminButton';
diff --git a/src/components/Users/SupervisorsList/SupervisorsList.js b/src/components/Users/SupervisorsList/SupervisorsList.js
index 5d6631998..efaab793a 100644
--- a/src/components/Users/SupervisorsList/SupervisorsList.js
+++ b/src/components/Users/SupervisorsList/SupervisorsList.js
@@ -11,7 +11,7 @@ const SupervisorsList = ({
   users,
   isLoaded = true,
   isAdmin,
-  mainAdminId
+  primaryAdminsIds
 }) =>
   <Table hover>
     <tbody>
@@ -21,7 +21,7 @@ const SupervisorsList = ({
           {...user}
           groupId={groupId}
           isAdmin={isAdmin}
-          mainAdminId={mainAdminId}
+          primaryAdminsIds={primaryAdminsIds}
         />
       )}
 
@@ -45,7 +45,7 @@ SupervisorsList.propTypes = {
   groupId: PropTypes.string.isRequired,
   isLoaded: PropTypes.bool,
   isAdmin: PropTypes.bool,
-  mainAdminId: PropTypes.string
+  primaryAdminsIds: PropTypes.array.isRequired
 };
 
 export default SupervisorsList;
diff --git a/src/components/Users/SupervisorsListItem/SupervisorsListItem.js b/src/components/Users/SupervisorsListItem/SupervisorsListItem.js
index d206e0c32..178b64062 100644
--- a/src/components/Users/SupervisorsListItem/SupervisorsListItem.js
+++ b/src/components/Users/SupervisorsListItem/SupervisorsListItem.js
@@ -3,7 +3,8 @@ import PropTypes from 'prop-types';
 import { connect } from 'react-redux';
 import MakeRemoveSupervisorButtonContainer from '../../../containers/MakeRemoveSupervisorButtonContainer';
 import MakeGroupAdminButton from '../../Groups/MakeGroupAdminButton';
-import { makeAdmin } from '../../../redux/modules/groups';
+import RemoveGroupAdminButton from '../../Groups/RemoveGroupAdminButton';
+import { addAdmin, removeAdmin } from '../../../redux/modules/groups';
 import { adminsOfGroup } from '../../../redux/selectors/groups';
 import UsersNameContainer from '../../../containers/UsersNameContainer';
 
@@ -13,8 +14,9 @@ const SupervisorsListItem = ({
   fullName,
   avatarUrl,
   groupId,
-  makeAdmin,
-  mainAdminId
+  addAdmin,
+  removeAdmin,
+  primaryAdminsIds
 }) =>
   <tr>
     <td>
@@ -22,10 +24,20 @@ const SupervisorsListItem = ({
     </td>
     {isAdmin &&
       <td>
-        <MakeRemoveSupervisorButtonContainer userId={id} groupId={groupId} />
-        {id !== mainAdminId &&
-          <MakeGroupAdminButton
-            onClick={() => makeAdmin(groupId, id)}
+        {primaryAdminsIds.indexOf(id) < 0 &&
+          <div>
+            <MakeRemoveSupervisorButtonContainer
+              userId={id}
+              groupId={groupId}
+            />
+            <MakeGroupAdminButton
+              onClick={() => addAdmin(groupId, id)}
+              bsSize="xs"
+            />
+          </div>}
+        {primaryAdminsIds.indexOf(id) >= 0 &&
+          <RemoveGroupAdminButton
+            onClick={() => removeAdmin(groupId, id)}
             bsSize="xs"
           />}
       </td>}
@@ -37,8 +49,9 @@ SupervisorsListItem.propTypes = {
   groupId: PropTypes.string.isRequired,
   fullName: PropTypes.string.isRequired,
   avatarUrl: PropTypes.string.isRequired,
-  makeAdmin: PropTypes.func.isRequired,
-  mainAdminId: PropTypes.string.isRequired
+  addAdmin: PropTypes.func.isRequired,
+  removeAdmin: PropTypes.func.isRequired,
+  primaryAdminsIds: PropTypes.array.isRequired
 };
 
 const mapStateToProps = (state, { groupId }) => ({
@@ -46,7 +59,8 @@ const mapStateToProps = (state, { groupId }) => ({
 });
 
 const mapDispatchToProps = {
-  makeAdmin
+  addAdmin,
+  removeAdmin
 };
 
 export default connect(mapStateToProps, mapDispatchToProps)(
diff --git a/src/redux/modules/groups.js b/src/redux/modules/groups.js
index 08c39d10c..43993e9f4 100644
--- a/src/redux/modules/groups.js
+++ b/src/redux/modules/groups.js
@@ -37,10 +37,14 @@ export const additionalActionTypes = {
   REMOVE_SUPERVISOR_PENDING: 'recodex/groups/REMOVE_SUPERVISOR_PENDING',
   REMOVE_SUPERVISOR_FULFILLED: 'recodex/groups/REMOVE_SUPERVISOR_FULFILLED',
   REMOVE_SUPERVISOR_REJECTED: 'recodex/groups/REMOVE_SUPERVISOR_REJECTED',
-  MAKE_ADMIN: 'recodex/groups/MAKE_ADMIN',
-  MAKE_ADMIN_PENDING: 'recodex/groups/MAKE_ADMIN_PENDING',
-  MAKE_ADMIN_FULFILLED: 'recodex/groups/MAKE_ADMIN_FULFILLED',
-  MAKE_ADMIN_REJECTED: 'recodex/groups/MAKE_ADMIN_REJECTED'
+  ADD_ADMIN: 'recodex/groups/ADD_ADMIN',
+  ADD_ADMIN_PENDING: 'recodex/groups/ADD_ADMIN_PENDING',
+  ADD_ADMIN_FULFILLED: 'recodex/groups/ADD_ADMIN_FULFILLED',
+  ADD_ADMIN_REJECTED: 'recodex/groups/ADD_ADMIN_REJECTED',
+  REMOVE_ADMIN: 'recodex/groups/REMOVE_ADMIN',
+  REMOVE_ADMIN_PENDING: 'recodex/groups/REMOVE_ADMIN_PENDING',
+  REMOVE_ADMIN_FULFILLED: 'recodex/groups/REMOVE_ADMIN_FULFILLED',
+  REMOVE_ADMIN_REJECTED: 'recodex/groups/REMOVE_ADMIN_REJECTED'
 };
 
 export const loadGroup = actions.pushResource;
@@ -52,9 +56,10 @@ export const validateAddGroup = (name, instanceId, parentGroupId = null) =>
     type: 'VALIDATE_ADD_GROUP_DATA',
     endpoint: '/groups/validate-add-group-data',
     method: 'POST',
-    body: parentGroupId === null
-      ? { name, instanceId }
-      : { name, instanceId, parentGroupId }
+    body:
+      parentGroupId === null
+        ? { name, instanceId }
+        : { name, instanceId, parentGroupId }
   });
 
 export const fetchSubgroups = groupId =>
@@ -132,10 +137,10 @@ export const removeSupervisor = (groupId, userId) => dispatch =>
     })
   ).catch(() => dispatch(addNotification('Cannot remove supervisor.', false))); // @todo: Make translatable
 
-export const makeAdmin = (groupId, userId) => dispatch =>
+export const addAdmin = (groupId, userId) => dispatch =>
   dispatch(
     createApiAction({
-      type: additionalActionTypes.MAKE_ADMIN,
+      type: additionalActionTypes.ADD_ADMIN,
       endpoint: `/groups/${groupId}/admin`,
       method: 'POST',
       meta: { groupId, userId },
@@ -147,6 +152,23 @@ export const makeAdmin = (groupId, userId) => dispatch =>
     )
   ); // @todo: Make translatable
 
+export const removeAdmin = (groupId, userId) => dispatch =>
+  dispatch(
+    createApiAction({
+      type: additionalActionTypes.REMOVE_ADMIN,
+      endpoint: `/groups/${groupId}/admin/${userId}`,
+      method: 'DELETE',
+      meta: { groupId, userId }
+    })
+  ).catch(() =>
+    dispatch(
+      addNotification(
+        'Cannot remove this person from admins of the group.',
+        false
+      )
+    )
+  ); // @todo: Make translatable
+
 /**
  * Reducer
  */
@@ -250,41 +272,60 @@ const reducer = handleActions(
         supervisors => supervisors.filter(id => id !== userId)
       ),
 
-    [additionalActionTypes.MAKE_ADMIN_PENDING]: (
+    [additionalActionTypes.ADD_ADMIN_PENDING]: (
       state,
-      { payload: { userId }, meta: { groupId } }
+      { payload, meta: { groupId, userId } }
     ) =>
-      state.updateIn(['resources', groupId, 'data'], group =>
-        group
-          .set('oldAdminId', group.get('adminId'))
-          .update('admins', admins =>
-            admins.filter(id => id !== userId).push(userId)
-          )
-          .set('adminId', userId)
+      state.updateIn(
+        ['resources', groupId, 'data', 'primaryAdminsIds'],
+        admins => admins.filter(id => id !== userId).concat([userId])
+      ),
+
+    [additionalActionTypes.ADD_ADMIN_FAILED]: (
+      state,
+      { payload, meta: { groupId, userId } }
+    ) =>
+      state.updateIn(
+        ['resources', groupId, 'data', 'primaryAdminsIds'],
+        admins => admins.filter(id => id !== userId)
       ),
 
-    [additionalActionTypes.MAKE_ADMIN_FAILED]: (
+    [additionalActionTypes.ADD_ADMIN_FULFILLED]: (
       state,
-      { payload: { userId }, meta: { groupId } }
+      { payload: { primaryAdminsIds, admins }, meta: { groupId } }
     ) =>
       state.updateIn(['resources', groupId, 'data'], group =>
         group
-          .update('admins', admins =>
-            admins.filter(id => id !== group.get('adminId')).push(userId)
-          )
-          .set('adminId', group.get('oldAdminId'))
-          .remove('oldAdminId')
+          .set('admins', List(admins))
+          .set('primaryAdminsIds', primaryAdminsIds)
+      ),
+
+    [additionalActionTypes.REMOVE_ADMIN_PENDING]: (
+      state,
+      { payload, meta: { groupId, userId } }
+    ) =>
+      state.updateIn(
+        ['resources', groupId, 'data', 'primaryAdminsIds'],
+        admins => admins.filter(id => id !== userId)
+      ),
+
+    [additionalActionTypes.REMOVE_ADMIN_FAILED]: (
+      state,
+      { payload, meta: { groupId, userId } }
+    ) =>
+      state.updateIn(
+        ['resources', groupId, 'data', 'primaryAdminsIds'],
+        admins => admins.filter(id => id !== userId).concat([userId])
       ),
 
-    [additionalActionTypes.MAKE_ADMIN_FULFILLED]: (
+    [additionalActionTypes.REMOVE_ADMIN_FULFILLED]: (
       state,
-      { payload: { adminId, admins }, meta: { groupId } }
+      { payload: { primaryAdminsIds, admins }, meta: { groupId } }
     ) =>
       state.updateIn(['resources', groupId, 'data'], group =>
         group
-          .remove('oldAdminId')
           .set('admins', List(admins))
-          .set('adminId', adminId)
+          .set('primaryAdminsIds', primaryAdminsIds)
       ),
 
     [additionalActionTypes.LOAD_USERS_GROUPS_FULFILLED]: (