--- pkg.h.old	2012-02-07 15:37:58.862025768 +0100
+++ pkg.h	2012-02-07 15:45:15.734025988 +0100
@@ -27,9 +27,9 @@
 /* It's OK to leak this */
 #undef PKG_CONFIG_PC_PATH
 #define PKG_CONFIG_PC_PATH \
-  g_strconcat (g_win32_get_package_installation_subdirectory (NULL, NULL, "lib/pkgconfig"), \
+  g_strconcat (g_build_filename (g_win32_get_package_installation_directory_of_module (NULL), "lib/pkgconfig"), \
 	       ";", \
-	       g_win32_get_package_installation_subdirectory (NULL, NULL, "share/pkgconfig"), \
+	       g_build_filename (g_win32_get_package_installation_directory_of_module (NULL), "share/pkgconfig"), \
 	       NULL)
 #endif