diff --git a/src/compat.h b/src/compat.h
index a867636..1ef1bf0 100644
--- a/src/compat.h
+++ b/src/compat.h
@@ -34,6 +34,7 @@
 #include <pthread.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/types.h>
 
 /*
  * The following macro is used to remove const cast-away warnings