diff --git a/api/js/etemplate/Et2Dialog/Et2DialogOverlay.ts b/api/js/etemplate/Et2Dialog/Et2DialogOverlay.ts
index 60f8bfb16f..949190c5ea 100644
--- a/api/js/etemplate/Et2Dialog/Et2DialogOverlay.ts
+++ b/api/js/etemplate/Et2Dialog/Et2DialogOverlay.ts
@@ -258,10 +258,10 @@ export class Et2DialogOverlay extends SlotMixin(LitElement)
                             label=${button.label}
                             .image=${ifDefined(button.image)}
                             .noSubmit=${true}
-                            disabled=${ifDefined(button.disabled)}
+                            ?disabled=${button.disabled}
                             align=${ifDefined(button.align)}>
                 </et2-button>
 			`
 		})}`;
 	}
-}
+}
\ No newline at end of file