diff --git a/src/userdb.js b/src/userdb.js
index b49516a31..bb7d397f9 100644
--- a/src/userdb.js
+++ b/src/userdb.js
@@ -128,11 +128,11 @@ function getAllWithGroupIdsPaged(search, page, perPage, callback) {
 
     if (search) {
         query += ' WHERE ';
-        query += '(users.username LIKE ' + mysql.escape(`%${search.toLowerCase()}%`) + ')';
+        query += '(LOWER(users.username) LIKE ' + mysql.escape(`%${search.toLowerCase()}%`) + ')';
         query += ' OR ';
-        query += '(users.email LIKE ' + mysql.escape(`%${search.toLowerCase()}%`) + ')';
+        query += '(LOWER(users.email) LIKE ' + mysql.escape(`%${search.toLowerCase()}%`) + ')';
         query += ' OR ';
-        query += '(users.displayName LIKE ' + mysql.escape(`%${search.toLowerCase()}%`) + ')';
+        query += '(LOWER(users.displayName) LIKE ' + mysql.escape(`%${search.toLowerCase()}%`) + ')';
     }
 
     query += ` GROUP BY users.id ORDER BY users.username ASC LIMIT ${(page-1)*perPage},${perPage} `;