diff --git a/dive.h b/dive.h
index 227de387c..ca90a9ae4 100644
--- a/dive.h
+++ b/dive.h
@@ -5,6 +5,7 @@
 #include <time.h>
 
 #include <glib.h>
+#include <glib/gstdio.h>
 #include <libxml/tree.h>
 
 /*
diff --git a/gtk-gui.c b/gtk-gui.c
index 404530024..d24675927 100644
--- a/gtk-gui.c
+++ b/gtk-gui.c
@@ -255,7 +255,7 @@ static void file_save(GtkWidget *w, gpointer data)
 
 		current_def_dir = path_and_file(existing_filename, &current_def_file);
 		if (stat(current_def_dir, &sb) != 0) {
-			mkdir(current_def_dir, S_IRWXU);
+			g_mkdir(current_def_dir, S_IRWXU);
 		}
 	}
 	free((void *)current_default);
@@ -507,7 +507,7 @@ static void pick_default_file(GtkWidget *w, GtkButton *button)
 	 * For gtk's file select box to make sense we create it if needed and then remove
 	 * it after the dialog has run */
 	if (stat(current_def_dir, &sb) != 0) {
-		if (mkdir(current_def_dir, S_IRWXU) == 0)
+		if (g_mkdir(current_def_dir, S_IRWXU) == 0)
 			need_rmdir = TRUE;
 	}
 	gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(fs_dialog), current_def_dir);