diff --git a/gtk/src/gtk_display_driver_opengl.cpp b/gtk/src/gtk_display_driver_opengl.cpp
index 153bfc17..c4fc7031 100644
--- a/gtk/src/gtk_display_driver_opengl.cpp
+++ b/gtk/src/gtk_display_driver_opengl.cpp
@@ -735,6 +735,8 @@ S9xOpenGLDisplayDriver::resize_window (int width, int height)
     XSync (display, False);
 
     gdk_window_show (gdk_window);
+    output_window_width = width;
+    output_window_height = height;
 
     return;
 }
diff --git a/gtk/src/gtk_display_driver_xv.cpp b/gtk/src/gtk_display_driver_xv.cpp
index 1333a705..9b62c479 100644
--- a/gtk/src/gtk_display_driver_xv.cpp
+++ b/gtk/src/gtk_display_driver_xv.cpp
@@ -47,6 +47,8 @@ S9xXVDisplayDriver::resize_window (int width, int height)
     XSync (display, False);
 
     gdk_window_show (gdk_window);
+    output_window_width = width;
+    output_window_height = height;
 
     return;
 }