diff --git a/portal/Makefile.am.inc b/portal/Makefile.am.inc
index a77363511..5cef72be7 100644
--- a/portal/Makefile.am.inc
+++ b/portal/Makefile.am.inc
@@ -37,3 +37,4 @@ CLEANFILES += $(portal_built_sources)
 
 flatpak_portal_LDADD = $(AM_LDADD) $(BASE_LIBS)
 flatpak_portal_CFLAGS = $(AM_CFLAGS) $(BASE_CFLAGS)
+flatpak_portal_CPPFLAGS = -I$(builddir)/portal
diff --git a/portal/flatpak-portal.c b/portal/flatpak-portal.c
index 03d6ded91..43d439dca 100644
--- a/portal/flatpak-portal.c
+++ b/portal/flatpak-portal.c
@@ -28,7 +28,6 @@
 #include <sys/ioctl.h>
 #include <gio/gio.h>
 #include <gio/gunixfdlist.h>
-#include "libglnx/libglnx.h"
 #include "flatpak-portal-dbus.h"
 #include "flatpak-portal.h"
 #include "flatpak-portal-app-info.h"