diff --git a/src/libstrongswan/chunk.c b/src/libstrongswan/chunk.c
index cba823c22..d70e1723f 100644
--- a/src/libstrongswan/chunk.c
+++ b/src/libstrongswan/chunk.c
@@ -22,6 +22,7 @@
  */
 
 #include <stdio.h>
+#include <sys/stat.h>
 
 #include "chunk.h"