diff --git a/oidset.h b/oidset.h
index 5346563b0b..d8a106b127 100644
--- a/oidset.h
+++ b/oidset.h
@@ -1,7 +1,6 @@
 #ifndef OIDSET_H
 #define OIDSET_H
 
-#include "hashmap.h"
 #include "khash.h"
 
 /**