diff --git a/gio/meson.build b/gio/meson.build
index 3da7a6e47..1c9a3694b 100644
--- a/gio/meson.build
+++ b/gio/meson.build
@@ -399,10 +399,7 @@ if host_system != 'windows'
     if glib_have_os_x_9_or_later
       unix_sources += files('gcocoanotificationbackend.m')
     endif
-    unix_sources += files(
-      'gosxnetworkmonitor.c',
-      'gosxnetworkmonitor.h'
-    )
+    unix_sources += files('gosxnetworkmonitor.c')
     application_headers += files('gosxappinfo.h')
   else
     contenttype_sources += files('gcontenttype-fdo.c')