diff --git a/librb/include/rb_dictionary.h b/librb/include/rb_dictionary.h
index 8008f9324..88774dd6f 100644
--- a/librb/include/rb_dictionary.h
+++ b/librb/include/rb_dictionary.h
@@ -25,6 +25,8 @@
 #ifndef __RB_DICTIONARY_H__
 #define __RB_DICTIONARY_H__
 
+#include "librb-config.h"
+
 struct Dictionary; /* defined in src/dictionary.c */
 
 typedef int (*DCF)(/* const void *a, const void *b */);