diff --git i/pkgconfig/meson.build w/pkgconfig/meson.build
index 8ed8299..594cbfe 100644
--- i/pkgconfig/meson.build
+++ w/pkgconfig/meson.build
@@ -2,8 +2,8 @@ pkgconf = configuration_data()
 
 pkgconf.set('prefix', get_option('prefix'))
 pkgconf.set('exec_prefix', '${prefix}')
-pkgconf.set('libdir', '${prefix}/@0@'.format(get_option('libdir')))
-pkgconf.set('includedir', '${prefix}/@0@'.format(get_option('includedir')))
+pkgconf.set('libdir', join_paths(get_option('prefix'), get_option('libdir')))
+pkgconf.set('includedir', join_paths(get_option('prefix'), get_option('includedir')))
 pkgconf.set('GST_API_VERSION', api_version)
 pkgconf.set('VERSION', gst_version)