diff --git a/desmume/src/frontend/posix/gtk-glade/callbacks.cpp b/desmume/src/frontend/posix/gtk-glade/callbacks.cpp
index 830a807ff..cce96dc2d 100755
--- a/desmume/src/frontend/posix/gtk-glade/callbacks.cpp
+++ b/desmume/src/frontend/posix/gtk-glade/callbacks.cpp
@@ -218,7 +218,7 @@ void  on_menu_quit_activate    (GtkMenuItem *menuitem, gpointer user_data) { gtk
 static void Printscreen()
 {
         GdkPixbuf *screenshot;
-        gchar *filename;
+        gchar *filename = NULL;
         GError *error = NULL;
         u8 *rgb;
         u16 *gpuFramebuffer = (u16 *)GPU->GetDisplayInfo().masterNativeBuffer;
@@ -243,13 +243,17 @@ static void Printscreen()
                                               NULL,
                                               NULL);
 
-        filename = g_strdup_printf("./desmume-screenshot-%d.png", seq);
-        gdk_pixbuf_save(screenshot, filename, "png", &error, NULL);
+        do {
+		g_free(filename);
+		filename = g_strdup_printf("./desmume-screenshot-%d.png", seq++);
+        }
+	while (g_file_test(filename, G_FILE_TEST_EXISTS));
+
+	gdk_pixbuf_save(screenshot, filename, "png", &error, NULL);
         if (error) {
                 g_error_free (error);
                 g_printerr("Failed to save %s", filename);
-        } else {
-                seq++;
+		seq--;
         }
 
         free(rgb);
diff --git a/desmume/src/frontend/posix/gtk/main.cpp b/desmume/src/frontend/posix/gtk/main.cpp
index f48e7f2af..e0252e5c4 100644
--- a/desmume/src/frontend/posix/gtk/main.cpp
+++ b/desmume/src/frontend/posix/gtk/main.cpp
@@ -2359,7 +2359,7 @@ static void Printscreen()
 {
     GdkPixbuf *screenshot;
     const gchar *dir;
-    gchar *filename, *filen;
+    gchar *filename = NULL, *filen = NULL;
     GError *error = NULL;
     u8 rgb[256 * 384 * 4];
     static int seq = 0;
@@ -2396,15 +2396,19 @@ static void Printscreen()
         dir = g_get_home_dir();
     }
 
-    filen = g_strdup_printf("desmume-screenshot-%d.png", seq);
-    filename = g_build_filename(dir, filen, NULL);
+    do {
+        g_free(filen);
+        g_free(filename);
+        filen = g_strdup_printf("desmume-screenshot-%d.png", seq++);
+        filename = g_build_filename(dir, filen, NULL);
+    }
+    while (g_file_test(filename, G_FILE_TEST_EXISTS));
 
     gdk_pixbuf_save(screenshot, filename, "png", &error, NULL);
     if (error) {
         g_error_free (error);
         g_printerr("Failed to save %s", filename);
-    } else {
-        seq++;
+        seq--;
     }
 
     //free(rgb);