diff --git a/configure.ac b/configure.ac
index 91bd0cbc10..b39e240260 100644
--- a/configure.ac
+++ b/configure.ac
@@ -588,9 +588,9 @@ fi
 
 GLIB_MAKEFILE='$(top_srcdir)/Makefile.glib'
 AC_SUBST(GLIB_MAKEFILE)
-GLIB_GENMARSHAL=`pkg-config --variable=glib_genmarshal glib-2.0`
+GLIB_GENMARSHAL=`$PKG_CONFIG --variable=glib_genmarshal glib-2.0`
 AC_SUBST(GLIB_GENMARSHAL)
-GLIB_MKENUMS=`pkg-config --variable=glib_mkenums glib-2.0`
+GLIB_MKENUMS=`$PKG_CONFIG --variable=glib_mkenums glib-2.0`
 AC_SUBST(GLIB_MKENUMS)
 
 AC_ARG_WITH(dbus-sys-dir, AS_HELP_STRING([--with-dbus-sys-dir=DIR], [where D-BUS system.d directory is]))