diff --git a/src/main/java/org/isf/permissions/manager/GroupPermissionManager.java b/src/main/java/org/isf/permissions/manager/GroupPermissionManager.java
index ca4f41904..1281f0c8c 100644
--- a/src/main/java/org/isf/permissions/manager/GroupPermissionManager.java
+++ b/src/main/java/org/isf/permissions/manager/GroupPermissionManager.java
@@ -104,7 +104,7 @@ public void delete(UserGroup userGroup, Permission permission) throws OHDataVali
 
 		if (groupPermission == null) {
 			throw new OHDataValidationException(
-				new OHExceptionMessage(MessageBundle.getMessage("angal.usergroup.permissionnotassigned"))
+				new OHExceptionMessage(MessageBundle.getMessage("angal.usergroup.permissionnotassigned.msg"))
 			);
 		}