diff --git a/src/mui/field/ReferenceManyField.js b/src/mui/field/ReferenceManyField.js
index f363e098..ce661006 100644
--- a/src/mui/field/ReferenceManyField.js
+++ b/src/mui/field/ReferenceManyField.js
@@ -68,13 +68,10 @@ ReferenceManyField.propTypes = {
     reference: PropTypes.string.isRequired,
     referenceRecords: PropTypes.object,
     resource: PropTypes.string.isRequired,
+    source: PropTypes.string.isRequired,
     target: PropTypes.string.isRequired,
 };
 
-ReferenceManyField.defaultProps = {
-    includesLabel: false,
-};
-
 function mapStateToProps(state, props) {
     const relatedTo = nameRelatedTo(props.reference, props.record.id, props.resource, props.target);
     return {
@@ -82,6 +79,13 @@ function mapStateToProps(state, props) {
     };
 }
 
-export default connect(mapStateToProps, {
+const ConnectedReferenceManyField = connect(mapStateToProps, {
     crudGetManyReference: crudGetManyReferenceAction,
 })(ReferenceManyField);
+
+ConnectedReferenceManyField.defaultProps = {
+    includesLabel: false,
+    source: '',
+};
+
+export default ConnectedReferenceManyField;
diff --git a/src/mui/input/Labeled.js b/src/mui/input/Labeled.js
index 6fc47d70..ce58f487 100644
--- a/src/mui/input/Labeled.js
+++ b/src/mui/input/Labeled.js
@@ -30,7 +30,7 @@ Labeled.propTypes = {
     basePath: PropTypes.string,
     children: PropTypes.element,
     input: PropTypes.object,
-    label: PropTypes.string.isRequired,
+    label: PropTypes.string,
     onChange: PropTypes.func,
     record: PropTypes.object,
     resource: PropTypes.string,
diff --git a/src/mui/input/SelectInput.js b/src/mui/input/SelectInput.js
index e7e30e67..69840c3f 100644
--- a/src/mui/input/SelectInput.js
+++ b/src/mui/input/SelectInput.js
@@ -57,7 +57,7 @@ SelectInput.propTypes = {
     options: PropTypes.object,
     optionText: PropTypes.string.isRequired,
     optionValue: PropTypes.string.isRequired,
-    source: PropTypes.string.isRequired,
+    source: PropTypes.string,
 };
 
 SelectInput.defaultProps = {