diff --git a/common/flatpak-bwrap.c b/common/flatpak-bwrap.c
index 9c4acb14..f7e8b10e 100644
--- a/common/flatpak-bwrap.c
+++ b/common/flatpak-bwrap.c
@@ -34,6 +34,7 @@
 
 #include <glib/gi18n-lib.h>
 
+#include <glib-unix.h>
 #include <gio/gio.h>
 #include "libglnx.h"
 
diff --git a/portal/flatpak-portal.c b/portal/flatpak-portal.c
index f2895f25..1c538520 100644
--- a/portal/flatpak-portal.c
+++ b/portal/flatpak-portal.c
@@ -31,6 +31,7 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 
+#include <glib-unix.h>
 #include <glib/gi18n-lib.h>
 #include <gio/gio.h>
 #include <gio/gunixfdlist.h>
diff --git a/system-helper/flatpak-system-helper.c b/system-helper/flatpak-system-helper.c
index d42d9d0d..a58ab2c6 100644
--- a/system-helper/flatpak-system-helper.c
+++ b/system-helper/flatpak-system-helper.c
@@ -34,6 +34,8 @@
 #include <fcntl.h>
 #include <unistd.h>
 
+#include <glib-unix.h>
+
 #include "flatpak-dbus-generated.h"
 #include "flatpak-dir-private.h"
 #include "flatpak-error.h"