diff --git a/invenio_app_rdm/records_ui/searchapp.py b/invenio_app_rdm/records_ui/searchapp.py
index ce0f19a80..3b35f32b0 100644
--- a/invenio_app_rdm/records_ui/searchapp.py
+++ b/invenio_app_rdm/records_ui/searchapp.py
@@ -31,7 +31,7 @@ def search_app_context():
             config_name="RDM_SEARCH_USER_REQUESTS",
             available_facets=current_app.config["REQUESTS_FACETS"],
             sort_options=current_app.config["RDM_SORT_OPTIONS"],
-            headers={"Accept": "application/json"},
+            headers={"Accept": "application/vnd.inveniordm.v1+json"},
             hidden_params=[
                 ["expand", "1"],
                 ["is_open", "true"],
@@ -65,6 +65,6 @@ def search_app_context():
             config_name="RDM_SEARCH",
             available_facets=current_app.config["RDM_FACETS"],
             sort_options=current_app.config["RDM_SORT_OPTIONS"],
-            headers={"Accept": "application/json"},
+            headers={"Accept": "application/vnd.inveniordm.v1+json"},
         ),
     }
diff --git a/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/administration/records/RemovalReasonsSelect.js b/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/administration/records/RemovalReasonsSelect.js
index 3eac9aef4..83b889219 100644
--- a/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/administration/records/RemovalReasonsSelect.js
+++ b/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/administration/records/RemovalReasonsSelect.js
@@ -34,13 +34,8 @@ export default class RemovalReasonsSelect extends Component {
     const { setFieldValue } = this.props;
     this.setState({ loading: true });
     const url = "/api/vocabularies/removalreasons";
-    this.cancellableAction = withCancel(
-      http.get(url, {
-        headers: {
-          Accept: "application/vnd.inveniordm.v1+json",
-        },
-      })
-    );
+    this.cancellableAction = withCancel(http.get(url));
+
     try {
       const response = await this.cancellableAction.promise;
       const options = response.data.hits.hits;
diff --git a/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/frontpage/RecordsList.js b/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/frontpage/RecordsList.js
index ee0a02cf3..092561c2e 100644
--- a/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/frontpage/RecordsList.js
+++ b/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/frontpage/RecordsList.js
@@ -45,13 +45,7 @@ export class RecordsList extends Component {
     const { fetchUrl } = this.props;
     this.setState({ isLoading: true });
 
-    this.cancellableFetch = withCancel(
-      http.get(fetchUrl, {
-        headers: {
-          Accept: "application/vnd.inveniordm.v1+json",
-        },
-      })
-    );
+    this.cancellableFetch = withCancel(http.get(fetchUrl));
 
     try {
       const response = await this.cancellableFetch.promise;
diff --git a/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/landing_page/CommunitiesManagement.js b/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/landing_page/CommunitiesManagement.js
index 1c223ba5a..f04ab6e22 100644
--- a/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/landing_page/CommunitiesManagement.js
+++ b/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/landing_page/CommunitiesManagement.js
@@ -45,11 +45,7 @@ export class CommunitiesManagement extends Component {
 
   fetchRecordCommunities = async () => {
     const { recordCommunityEndpoint } = this.props;
-    return await http.get(recordCommunityEndpoint, {
-      headers: {
-        Accept: "application/vnd.inveniordm.v1+json",
-      },
-    });
+    return await http.get(recordCommunityEndpoint);
   };
 
   getCommunities = async () => {
diff --git a/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/landing_page/EditButton.js b/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/landing_page/EditButton.js
index 592518269..79168bdf5 100644
--- a/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/landing_page/EditButton.js
+++ b/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/landing_page/EditButton.js
@@ -23,7 +23,6 @@ export const EditButton = ({ recid, onError }) => {
         {
           headers: {
             "Content-Type": "application/json",
-            "Accept": "application/vnd.inveniordm.v1+json",
           },
         }
       );
diff --git a/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/landing_page/RecordVersionsList.js b/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/landing_page/RecordVersionsList.js
index 70738d9ff..009b92bde 100644
--- a/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/landing_page/RecordVersionsList.js
+++ b/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/landing_page/RecordVersionsList.js
@@ -89,12 +89,7 @@ export const RecordVersionsList = ({ record, isPreview }) => {
   const fetchVersions = async () => {
     return await http.get(
       `${recordDeserialized.links.versions}?size=${NUMBER_OF_VERSIONS}&sort=version&allversions=true`,
-      {
-        headers: {
-          Accept: "application/vnd.inveniordm.v1+json",
-        },
-        withCredentials: true,
-      }
+      { withCredentials: true }
     );
   };
 
diff --git a/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/user_dashboard/uploads.js b/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/user_dashboard/uploads.js
index c8c368c35..8455185c9 100644
--- a/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/user_dashboard/uploads.js
+++ b/invenio_app_rdm/theme/assets/semantic-ui/js/invenio_app_rdm/user_dashboard/uploads.js
@@ -49,7 +49,6 @@ export const RDMRecordResultsListItem = ({ result }) => {
         {
           headers: {
             "Content-Type": "application/json",
-            "Accept": "application/vnd.inveniordm.v1+json",
           },
         }
       )
diff --git a/invenio_app_rdm/users_ui/searchapp.py b/invenio_app_rdm/users_ui/searchapp.py
index c38d32886..24e3c1374 100644
--- a/invenio_app_rdm/users_ui/searchapp.py
+++ b/invenio_app_rdm/users_ui/searchapp.py
@@ -40,7 +40,7 @@ def search_app_context():
             current_app.config["REQUESTS_FACETS"],
             current_app.config["RDM_SORT_OPTIONS"],
             "/api/user/requests",
-            {"Accept": "application/json"},
+            {"Accept": "application/vnd.inveniordm.v1+json"},
             initial_filters=[["is_open", "true"]],
             hidden_params=[["expand", "1"]],
         ),