diff --git a/haggis.c b/haggis.c
index a4b8c15..503e549 100644
--- a/haggis.c
+++ b/haggis.c
@@ -31,7 +31,6 @@
  */
 
 #include <limits.h>          // PATH_MAX
-#include <stddef.h>
 #include <stdint.h>          // uint<x>_t
 
 #if defined(__FreeBSD__) || defined(__DragonFly__)