diff --git a/glib/gfileutils.c b/glib/gfileutils.c
index 010125516..b7cd2d570 100644
--- a/glib/gfileutils.c
+++ b/glib/gfileutils.c
@@ -1940,7 +1940,17 @@ g_format_size_full (guint64          size,
       /* Translators: the %s in "%s bytes" will always be replaced by a number. */
       translated_format = g_dngettext(GETTEXT_PACKAGE, "%s byte", "%s bytes", plural_form);
 
+      /* XXX: Windows doesn't support the "'" format modifier, so we
+       * must not use it there.  Instead, just display the number
+       * without separation.  Bug #655336 is open until a solution is
+       * found.
+       */
+#ifndef G_OS_WIN32
       formatted_number = g_strdup_printf ("%'"G_GUINT64_FORMAT, size);
+#else
+      formatted_number = g_strdup_printf ("%"G_GUINT64_FORMAT, size);
+#endif
+
       g_string_append (string, " (");
       g_string_append_printf (string, translated_format, formatted_number);
       g_free (formatted_number);