diff --git a/common/mlutils/unix_utils-c.c b/common/mlutils/unix_utils-c.c
index 1b5eb7957..3344ff42f 100644
--- a/common/mlutils/unix_utils-c.c
+++ b/common/mlutils/unix_utils-c.c
@@ -55,6 +55,10 @@
 #include <windows.h>
 #endif
 
+#ifdef HAVE_SYS_MOUNT_H
+#include <sys/mount.h>
+#endif
+
 #include <caml/alloc.h>
 #include <caml/fail.h>
 #include <caml/memory.h>
diff --git a/m4/guestfs-libraries.m4 b/m4/guestfs-libraries.m4
index cbc77a17c..095dd38bf 100644
--- a/m4/guestfs-libraries.m4
+++ b/m4/guestfs-libraries.m4
@@ -47,6 +47,7 @@ AC_CHECK_HEADERS([\
     linux/rtc.h \
     printf.h \
     sys/inotify.h \
+    sys/mount.h \
     sys/resource.h \
     sys/socket.h \
     sys/statfs.h \