diff --git a/syncplay/ui/gui.py b/syncplay/ui/gui.py
index a1c5f40..9c2acee 100644
--- a/syncplay/ui/gui.py
+++ b/syncplay/ui/gui.py
@@ -129,7 +129,7 @@ class MainWindow(QtGui.QMainWindow):
             self._syncplayClient.setPosition(t)
 
         else:
-            self.showMessage("Invalid seek value", True)
+            self.showErrorMessage("Invalid seek value")
         
     def undoSeek(self):
         tmp_pos = self._syncplayClient.getPlayerPosition()