diff --git a/graph/loaders/users.js b/graph/loaders/users.js
index 9b9020d60..d8e1927cb 100644
--- a/graph/loaders/users.js
+++ b/graph/loaders/users.js
@@ -84,10 +84,10 @@ const getUsersByQuery = async (
 
     if (value.length > 0) {
       // Lowercase the search term and escape any regex characters.
-      value = escapeRegExp(value).toLowerCase();
+      value = escapeRegExp(value);
 
-      // Compile the prefix search regex.
-      const $regex = new RegExp(`^${value}`);
+      const lowercasedRegex = new RegExp(`^${value.toLowerCase()}`);
+      const notLowercasedRegex = new RegExp(`^${value}`);
 
       // Merge in the regex params.
       query.merge({
@@ -95,7 +95,7 @@ const getUsersByQuery = async (
           // Search by a prefix match on the username.
           {
             lowercaseUsername: {
-              $regex,
+              $regex: lowercasedRegex,
             },
           },
 
@@ -104,7 +104,7 @@ const getUsersByQuery = async (
             profiles: {
               $elemMatch: {
                 id: {
-                  $regex,
+                  $regex: lowercasedRegex,
                 },
                 provider: 'local',
               },
@@ -114,7 +114,7 @@ const getUsersByQuery = async (
           // Search by the displayName metadata field.
           {
             'metadata.displayName': {
-              $regex,
+              $regex: notLowercasedRegex,
             },
           },
         ],