diff --git a/gui/admin-gui/src/main/resources/localization/Midpoint.properties b/gui/admin-gui/src/main/resources/localization/Midpoint.properties
index 7318c0cb6c8..57e600c0641 100644
--- a/gui/admin-gui/src/main/resources/localization/Midpoint.properties
+++ b/gui/admin-gui/src/main/resources/localization/Midpoint.properties
@@ -3789,4 +3789,4 @@ AbstractPolicyConstraintType.enforcement=Enforcement
 ExclusionPolicyConstraintType.targetRef=Target reference
 ExclusionPolicyConstraintType.policy=Policy
 ExclusionPolicyConstraintPanel.exclusionTitle=Exclusion
-
+comboInput.nullValid=Choose one
\ No newline at end of file