diff --git a/jsx/src/components/AddUser/AddUser.jsx b/jsx/src/components/AddUser/AddUser.jsx
index b56279bd..9ec96014 100644
--- a/jsx/src/components/AddUser/AddUser.jsx
+++ b/jsx/src/components/AddUser/AddUser.jsx
@@ -21,7 +21,7 @@ const AddUser = (props) => {
     });
   };
 
-  var { addUsers, failRegexEvent, updateUsers, history } = props;
+  var { addUsers, updateUsers, history } = props;
 
   return (
     <>
@@ -122,7 +122,6 @@ const AddUser = (props) => {
 
 AddUser.propTypes = {
   addUsers: PropTypes.func,
-  failRegexEvent: PropTypes.func,
   updateUsers: PropTypes.func,
   history: PropTypes.shape({
     push: PropTypes.func,
diff --git a/jsx/src/components/AddUser/AddUser.test.js b/jsx/src/components/AddUser/AddUser.test.js
index ee91fdbd..217ee1a4 100644
--- a/jsx/src/components/AddUser/AddUser.test.js
+++ b/jsx/src/components/AddUser/AddUser.test.js
@@ -28,7 +28,6 @@ var addUserJsx = (spy, spy2, spy3) => (
     <HashRouter>
       <AddUser
         addUsers={spy}
-        failRegexEvent={spy2 || spy}
         updateUsers={spy3 || spy2 || spy}
         history={{ push: () => {} }}
       />
diff --git a/jsx/src/components/CreateGroup/CreateGroup.jsx b/jsx/src/components/CreateGroup/CreateGroup.jsx
index 37deb4ed..d34254ab 100644
--- a/jsx/src/components/CreateGroup/CreateGroup.jsx
+++ b/jsx/src/components/CreateGroup/CreateGroup.jsx
@@ -108,7 +108,6 @@ const CreateGroup = (props) => {
 CreateGroup.propTypes = {
   createGroup: PropTypes.func,
   updateGroups: PropTypes.func,
-  failRegexEvent: PropTypes.func,
   history: PropTypes.shape({
     push: PropTypes.func,
   }),
diff --git a/jsx/src/components/EditUser/EditUser.jsx b/jsx/src/components/EditUser/EditUser.jsx
index 2575b808..892c90a5 100644
--- a/jsx/src/components/EditUser/EditUser.jsx
+++ b/jsx/src/components/EditUser/EditUser.jsx
@@ -170,7 +170,6 @@ EditUser.propTypes = {
   }),
   editUser: PropTypes.func,
   deleteUser: PropTypes.func,
-  failRegexEvent: PropTypes.func,
   noChangeEvent: PropTypes.func,
   updateUsers: PropTypes.func,
 };
diff --git a/jsx/src/components/EditUser/EditUser.test.js b/jsx/src/components/EditUser/EditUser.test.js
index cff36387..920b9e16 100644
--- a/jsx/src/components/EditUser/EditUser.test.js
+++ b/jsx/src/components/EditUser/EditUser.test.js
@@ -31,7 +31,6 @@ var editUserJsx = (callbackSpy, empty) => (
         editUser={callbackSpy}
         updateUsers={callbackSpy}
         history={{ push: () => {} }}
-        failRegexEvent={callbackSpy}
         noChangeEvent={callbackSpy}
       />
     </HashRouter>
diff --git a/jsx/src/util/withAPI.js b/jsx/src/util/withAPI.js
index f17f7f25..97fc698e 100644
--- a/jsx/src/util/withAPI.js
+++ b/jsx/src/util/withAPI.js
@@ -41,10 +41,7 @@ const withAPI = withProps(() => ({
     jhapiRequest("/users/" + username, "GET")
       .then((data) => data.status)
       .then((data) => (data > 200 ? false : true)),
-  // Temporarily Unused
-  failRegexEvent: () => {
-    return null;
-  },
+
   noChangeEvent: () => {
     return null;
   },