diff --git a/meson.build b/meson.build
index 6ad98d23e..0582d6f9a 100644
--- a/meson.build
+++ b/meson.build
@@ -477,7 +477,6 @@ inc = include_directories(
     'randr',
     'render',
     'xfixes',
-    xproto_dep.get_pkgconfig_variable('includedir')
 )
 
 glx_inc = include_directories('glx')
diff --git a/os/meson.build b/os/meson.build
index ff3a4615b..eb8fcf55d 100644
--- a/os/meson.build
+++ b/os/meson.build
@@ -67,6 +67,9 @@ if srcs_libc.length() > 0
     libxlibc = static_library('libxlibc',
         srcs_libc,
         include_directories: inc,
+        dependencies: [
+            xproto_dep,
+        ],
     )
 endif