diff --git a/src/platform/guigtk.cpp b/src/platform/guigtk.cpp
index 94eb6b5..46a7df3 100644
--- a/src/platform/guigtk.cpp
+++ b/src/platform/guigtk.cpp
@@ -1345,7 +1345,7 @@ public:
             return;
 
         Platform::Path path = GetFilename();
-        if(gtkChooser->get_action() != GTK_FILE_CHOOSER_ACTION_OPEN) {
+        if(gtkChooser->get_action() != Gtk::FILE_CHOOSER_ACTION_OPEN) {
             SetCurrentName(path.WithExtension(extension).FileName());
         }
     }