diff --git a/src/main/java/org/ligoj/app/plugin/id/resource/UserOrgResource.java b/src/main/java/org/ligoj/app/plugin/id/resource/UserOrgResource.java
index d9d06eb..bf6aa98 100644
--- a/src/main/java/org/ligoj/app/plugin/id/resource/UserOrgResource.java
+++ b/src/main/java/org/ligoj/app/plugin/id/resource/UserOrgResource.java
@@ -576,8 +576,11 @@ private boolean hasAttributeChange(final SimpleUser user1, final SimpleUser user
 		final var predicateFalse = Arrays.stream(equals)
 				.filter(f -> !StringUtils.equalsIgnoreCase(StringUtils.trimToNull(f.apply(user2)),
 						StringUtils.trimToNull(f.apply(user1)))).findFirst().orElse(null);
-		return predicateFalse != null && hasAttributeChange(user1, true,
-				String.format("'%s' != '%s'", predicateFalse.apply(user1), predicateFalse.apply(user2)));
+		if (predicateFalse != null) {
+			return hasAttributeChange(user1, true,
+					String.format("'%s' != '%s'", predicateFalse.apply(user1), predicateFalse.apply(user2)));
+		}
+		return false;
 	}
 
 	/**