diff --git a/desmume/src/gtk/main.cpp b/desmume/src/gtk/main.cpp
index 8241dc486..3555b328a 100644
--- a/desmume/src/gtk/main.cpp
+++ b/desmume/src/gtk/main.cpp
@@ -1598,19 +1598,28 @@ static void Printscreen()
     GError *error = NULL;
     u8 *rgb;
     static int seq = 0;
+    gint H, W;
 
-    rgb = (u8 *) malloc(SCREENS_PIXEL_SIZE*3);
+    rgb = (u8 *) malloc(SCREENS_PIXEL_SIZE*SCREEN_BYTES_PER_PIXEL);
     if (!rgb)
         return;
 
-    gpu_screen_to_rgb(rgb, SCREENS_PIXEL_SIZE);
+    if (nds_screen.rotation_angle == 0 || nds_screen.rotation_angle == 180) {
+        W = screen_size[nds_screen.orientation].width;
+        H = screen_size[nds_screen.orientation].height;
+    } else {
+        W = screen_size[nds_screen.orientation].height;
+        H = screen_size[nds_screen.orientation].width;
+    }
+
+    gpu_screen_to_rgb(rgb, W*H*SCREEN_BYTES_PER_PIXEL);
     screenshot = gdk_pixbuf_new_from_data(rgb,
                           GDK_COLORSPACE_RGB,
                           FALSE,
                           8,
-                          256,
-                          192*2,
-                          256*3, 
+                          W,
+                          H,
+                          W*SCREEN_BYTES_PER_PIXEL,
                           NULL,
                           NULL);