diff --git a/evhttp.h b/evhttp.h
index 4597112e..8b0e88d6 100644
--- a/evhttp.h
+++ b/evhttp.h
@@ -27,6 +27,8 @@
 #ifndef _EVHTTP_H_
 #define _EVHTTP_H_
 
+#include <event.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif