diff --git a/extensions/guacamole-auth-mysql/src/main/resources/net/sourceforge/guacamole/net/auth/mysql/dao/SystemPermissionMapper.xml b/extensions/guacamole-auth-mysql/src/main/resources/net/sourceforge/guacamole/net/auth/mysql/dao/SystemPermissionMapper.xml
index 5e82c2e0f..1164e2b6b 100644
--- a/extensions/guacamole-auth-mysql/src/main/resources/net/sourceforge/guacamole/net/auth/mysql/dao/SystemPermissionMapper.xml
+++ b/extensions/guacamole-auth-mysql/src/main/resources/net/sourceforge/guacamole/net/auth/mysql/dao/SystemPermissionMapper.xml
@@ -63,7 +63,7 @@
     <!-- Insert all given permissions -->
     <insert id="insert" parameterType="net.sourceforge.guacamole.net.auth.mysql.model.SystemPermissionModel">
 
-        INSERT INTO guacamole_system_permission (
+        INSERT IGNORE INTO guacamole_system_permission (
             user_id,
             permission
         )