diff --git a/src/basic/tmpfile-util.c b/src/basic/tmpfile-util.c
index 669eb2666c..bc92d6a6de 100644
--- a/src/basic/tmpfile-util.c
+++ b/src/basic/tmpfile-util.c
@@ -8,6 +8,7 @@
 #include "hexdecoct.h"
 #include "macro.h"
 #include "memfd-util.h"
+#include "missing_fcntl.h"
 #include "missing_syscall.h"
 #include "path-util.h"
 #include "process-util.h"