diff --git a/configure.ac b/configure.ac
index 3a1ad17a7a..ff803b1892 100644
--- a/configure.ac
+++ b/configure.ac
@@ -254,7 +254,7 @@ AC_CHECK_FUNC(gethostbyname,,[AC_CHECK_LIB(nsl,gethostbyname)])
 dnl *** checks for dependency libraries ***
 
 dnl GLib is required
-AG_GST_GLIB_CHECK([2.18])
+AG_GST_GLIB_CHECK([2.20])
 
 dnl liboil is required
 PKG_CHECK_MODULES(LIBOIL, liboil-0.3 >= 0.3.14, HAVE_LIBOIL=yes, HAVE_LIBOIL=no)
diff --git a/ext/gio/gstgiobasesrc.c b/ext/gio/gstgiobasesrc.c
index 85d94a07bb..133e12c263 100644
--- a/ext/gio/gstgiobasesrc.c
+++ b/ext/gio/gstgiobasesrc.c
@@ -189,9 +189,8 @@ gst_gio_base_src_get_size (GstBaseSrc * base_src, guint64 * size)
     GFileInfo *info;
     GError *err = NULL;
 
-    /* FIXME: remove (char *) cast once we depend on GLib >= 2.20 */
     info = g_file_input_stream_query_info (G_FILE_INPUT_STREAM (src->stream),
-        (char *) G_FILE_ATTRIBUTE_STANDARD_SIZE, src->cancel, &err);
+        G_FILE_ATTRIBUTE_STANDARD_SIZE, src->cancel, &err);
 
     if (info != NULL) {
       *size = g_file_info_get_size (info);