diff --git a/src/utils/crc32.c b/src/utils/crc32.c
index 8bad11b5f..7ac4456ce 100644
--- a/src/utils/crc32.c
+++ b/src/utils/crc32.c
@@ -21,6 +21,7 @@
  */
 #include <stdint.h>
 #include <stdlib.h>
+#include <sys/types.h>
 
 #ifdef MAKECRCH
 #  include <stdio.h>