diff --git a/rdkafka.h b/rdkafka.h
index dd22ff0a59..d8f1c73927 100644
--- a/rdkafka.h
+++ b/rdkafka.h
@@ -38,6 +38,7 @@
 
 #include <stdio.h>
 #include <inttypes.h>
+#include <sys/types.h>
 
 
 /**