diff --git a/execute.c b/execute.c
index 0b4baee6478..7192abfffb8 100644
--- a/execute.c
+++ b/execute.c
@@ -35,6 +35,7 @@
 #include <grp.h>
 #include <pwd.h>
 #include <sys/mount.h>
+#include <linux/fs.h>
 
 #include "execute.h"
 #include "strv.h"
diff --git a/load-fragment.c b/load-fragment.c
index b5efbb25e07..0dfb49f1138 100644
--- a/load-fragment.c
+++ b/load-fragment.c
@@ -28,6 +28,7 @@
 #include <sched.h>
 #include <sys/prctl.h>
 #include <sys/mount.h>
+#include <linux/fs.h>
 
 #include "unit.h"
 #include "strv.h"
diff --git a/namespace.c b/namespace.c
index 880d5c33ebb..09bcaff9684 100644
--- a/namespace.c
+++ b/namespace.c
@@ -29,6 +29,7 @@
 #include <sched.h>
 #include <sys/syscall.h>
 #include <limits.h>
+#include <linux/fs.h>
 
 #include "strv.h"
 #include "util.h"
diff --git a/test-ns.c b/test-ns.c
index d40f8beb6b1..a54011e300c 100644
--- a/test-ns.c
+++ b/test-ns.c
@@ -23,6 +23,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <sys/mount.h>
+#include <linux/fs.h>
 
 #include "namespace.h"
 #include "log.h"