diff --git a/controller-runtime/src/main/kotlin/app/simplecloud/controller/runtime/group/GroupService.kt b/controller-runtime/src/main/kotlin/app/simplecloud/controller/runtime/group/GroupService.kt
index 201933a..8c7ff6e 100644
--- a/controller-runtime/src/main/kotlin/app/simplecloud/controller/runtime/group/GroupService.kt
+++ b/controller-runtime/src/main/kotlin/app/simplecloud/controller/runtime/group/GroupService.kt
@@ -34,6 +34,11 @@ class GroupService(
         groupRepository.find(request.group.name)
             ?: throw StatusException(Status.NOT_FOUND.withDescription("This group does not exist"))
         val group = Group.fromDefinition(request.group)
+
+        if (group.minMemory > group.maxMemory) {
+            throw StatusException(Status.INVALID_ARGUMENT.withDescription("Minimum memory must be smaller than maximum memory"))
+        }
+
         try {
             groupRepository.save(group)
         } catch (e: Exception) {
@@ -47,6 +52,11 @@ class GroupService(
             throw StatusException(Status.NOT_FOUND.withDescription("This group already exists"))
         }
         val group = Group.fromDefinition(request.group)
+
+        if (group.minMemory > group.maxMemory) {
+            throw StatusException(Status.INVALID_ARGUMENT.withDescription("Minimum memory must be smaller than maximum memory"))
+        }
+
         try {
             groupRepository.save(group)
         } catch (e: Exception) {