diff --git a/src/actions/challenge.js b/src/actions/challenge.js
index 5256ad9..84272bd 100644
--- a/src/actions/challenge.js
+++ b/src/actions/challenge.js
@@ -454,6 +454,20 @@ function getChallengeDone(challengeId) {
   return challengeService.getChallenge(challengeId);
 }
 
+/**
+ * @static
+ * @desc Check if a user has registered a challenge
+ * @param {String} challengeId Challenge ID.
+ * @param {String} userId User Id.
+ * @return {Action}
+ */
+async function getIsRegistered(challengeId, userId) {
+  const registrants = await challengeService.getChallengeRegistrants(challengeId);
+  const isRegistered = _.some(registrants, (r) => `${r.memberId}` === `${userId}`);
+  return { isRegistered };
+}
+
+
 export default createActions({
   CHALLENGE: {
     DROP_CHECKPOINTS: dropCheckpoints,
@@ -483,5 +497,6 @@ export default createActions({
     GET_SUBMISSION_INFORMATION_DONE: getSubmissionInformationDone,
     GET_CHALLENGE_INIT: _.noop,
     GET_CHALLENGE_DONE: getChallengeDone,
+    GET_IS_REGISTERED: getIsRegistered,
   },
 });
diff --git a/src/containers/Submission/index.jsx b/src/containers/Submission/index.jsx
index 9c1e1ea..6653af9 100644
--- a/src/containers/Submission/index.jsx
+++ b/src/containers/Submission/index.jsx
@@ -25,7 +25,6 @@ const Submission = ({
   getCommunityList,
   isLoadingChallenge,
   isChallengeLoaded,
-
   track,
   agreed,
   filePickers,
@@ -38,6 +37,7 @@ const Submission = ({
   submitDone,
   uploadProgress,
 
+  getIsRegistered,
   getChallenge,
   submit,
   resetForm,
@@ -92,6 +92,11 @@ const Submission = ({
     );
   }
 
+  const handleSubmit = async (data) => {
+    const registered = await getIsRegistered(challengeId, userId);
+    if (registered) submit(data);
+  };
+
   return (
     <Submit
       challengeId={challengeId}
@@ -119,7 +124,7 @@ const Submission = ({
       setFilePickerUploadProgress={setFilePickerUploadProgress}
       setFilePickerDragged={setFilePickerDragged}
       setSubmissionFilestackData={setSubmissionFilestackData}
-      submit={submit}
+      submit={handleSubmit}
     />
   );
 };
@@ -155,6 +160,7 @@ Submission.propTypes = {
   uploadProgress: PT.number,
 
   getChallenge: PT.func,
+  getIsRegistered: PT.func,
   submit: PT.func,
   resetForm: PT.func,
   setAgreed: PT.func,
@@ -209,6 +215,10 @@ const mapDispatchToProps = (dispatch) => {
     setAuth: () => {
       dispatch(actions.auth.setAuthDone());
     },
+    getIsRegistered: async (challengeId, userId) => {
+      const action = await dispatch(actions.challenge.getIsRegistered(challengeId, userId));
+      return action?.payload?.isRegistered;
+    },
     getChallenge: (challengeId) => {
       dispatch(actions.challenge.getChallengeInit(challengeId));
       dispatch(actions.challenge.getChallengeDone(challengeId));
diff --git a/src/reducers/challenge.js b/src/reducers/challenge.js
index 346db3e..5e213f8 100644
--- a/src/reducers/challenge.js
+++ b/src/reducers/challenge.js
@@ -472,6 +472,30 @@ function onGetChallengeDone(state, { error, payload }) {
   };
 }
 
+/**
+ * Update isRegistered to before challenge submit
+ * @param {Object} state Old state.
+ * @param {Object} actions Action error/payload.
+ * @param {Object} action Action.
+ */
+function onGetIsRegistered(state, { error, payload }) {
+  if (error) {
+    logger.error("Failed to get the user's registration status!", payload);
+    fireErrorMessage(
+      "ERROR: Failed to submit",
+      "Please, try again a bit later"
+    );
+    return state;
+  }
+  return {
+    ...state,
+    challenge: {
+      ...state.challenge,
+      isRegistered: payload.isRegistered
+    }
+  };
+}
+
 /**
  * Creates a new Challenge reducer with the specified initial state.
  * @param {Object} initialState Optional. Initial state.
@@ -520,6 +544,7 @@ function create(initialState) {
       [a.getSubmissionInformationDone]: onGetSubmissionInformationDone,
       [a.getChallengeInit]: onGetChallengeInit,
       [a.getChallengeDone]: onGetChallengeDone,
+      [a.getIsRegistered]: onGetIsRegistered,
     },
     _.defaults(initialState, {
       details: null,
diff --git a/src/services/challenge.js b/src/services/challenge.js
index 38e4c6b..adde73c 100644
--- a/src/services/challenge.js
+++ b/src/services/challenge.js
@@ -113,4 +113,5 @@ async function getChallenge(challengeId) {
 
 export default {
   getChallenge,
+  getChallengeRegistrants
 };