diff --git a/src/core/namespace.c b/src/core/namespace.c
index ffa236cc88..c5ad918a2f 100644
--- a/src/core/namespace.c
+++ b/src/core/namespace.c
@@ -4,6 +4,7 @@
 #include <linux/loop.h>
 #include <sched.h>
 #include <stdio.h>
+#include <sys/file.h>
 #include <sys/mount.h>
 #include <unistd.h>
 #include <linux/fs.h>
diff --git a/src/dissect/dissect.c b/src/dissect/dissect.c
index 0239d9b394..4e39f959cf 100644
--- a/src/dissect/dissect.c
+++ b/src/dissect/dissect.c
@@ -4,6 +4,7 @@
 #include <getopt.h>
 #include <linux/loop.h>
 #include <stdio.h>
+#include <sys/file.h>
 #include <sys/ioctl.h>
 #include <sys/mount.h>
 
diff --git a/src/shared/dissect-image.c b/src/shared/dissect-image.c
index 6885b14bb2..36174f8743 100644
--- a/src/shared/dissect-image.c
+++ b/src/shared/dissect-image.c
@@ -7,6 +7,7 @@
 #include <linux/blkpg.h>
 #include <linux/dm-ioctl.h>
 #include <linux/loop.h>
+#include <sys/file.h>
 #include <sys/mount.h>
 #include <sys/prctl.h>
 #include <sys/wait.h>
diff --git a/src/sysext/sysext.c b/src/sysext/sysext.c
index 002ebb09f8..b81f1ebe73 100644
--- a/src/sysext/sysext.c
+++ b/src/sysext/sysext.c
@@ -3,6 +3,7 @@
 #include <fcntl.h>
 #include <getopt.h>
 #include <linux/loop.h>
+#include <sys/file.h>
 #include <sys/mount.h>
 #include <unistd.h>
 
diff --git a/src/test/test-loop-block.c b/src/test/test-loop-block.c
index d1793222f0..9179ef5d60 100644
--- a/src/test/test-loop-block.c
+++ b/src/test/test-loop-block.c
@@ -3,6 +3,7 @@
 #include <fcntl.h>
 #include <linux/loop.h>
 #include <pthread.h>
+#include <sys/file.h>
 
 #include "alloc-util.h"
 #include "dissect-image.h"