diff --git a/midori/midori-extension.c b/midori/midori-extension.c
index c48a5847..9a576003 100644
--- a/midori/midori-extension.c
+++ b/midori/midori-extension.c
@@ -337,6 +337,7 @@ midori_extension_deactivate (MidoriExtension* extension)
 {
     g_return_if_fail (MIDORI_IS_EXTENSION (extension));
 
+    extension->priv->active = FALSE;
     g_signal_emit (extension, signals[DEACTIVATE], 0);
     g_signal_handlers_destroy (extension);
     g_object_run_dispose (G_OBJECT (extension));