diff --git a/src/plugins/platformthemes/gtk3/qgtk3dialoghelpers.cpp b/src/plugins/platformthemes/gtk3/qgtk3dialoghelpers.cpp
index 75549d47c1..0da04f2669 100644
--- a/src/plugins/platformthemes/gtk3/qgtk3dialoghelpers.cpp
+++ b/src/plugins/platformthemes/gtk3/qgtk3dialoghelpers.cpp
@@ -171,7 +171,7 @@ QGtk3ColorDialogHelper::QGtk3ColorDialogHelper()
     connect(d.data(), SIGNAL(accept()), this, SLOT(onAccepted()));
     connect(d.data(), SIGNAL(reject()), this, SIGNAL(reject()));
 
-    g_signal_connect_swapped(d->gtkDialog(), "color-activated", G_CALLBACK(onColorChanged), this);
+    g_signal_connect_swapped(d->gtkDialog(), "notify::rgba", G_CALLBACK(onColorChanged), this);
 }
 
 QGtk3ColorDialogHelper::~QGtk3ColorDialogHelper()