diff --git a/src/hammer.h b/src/hammer.h
index 16bff4d1fc3910651a41e9081efedd4bfadbca38..2914b8ffee80f8f0409546a85f737e8920480d51 100644
--- a/src/hammer.h
+++ b/src/hammer.h
@@ -34,12 +34,6 @@
 extern "C" {
 #endif
 
-#ifndef __cplusplus
-  //#ifndef HAMMER_INTERNAL__NO_STDARG_H
-  //typedef int bool;
-  //#endif // HAMMER_INTERNAL__NO_STDARG_H
-#endif
-
 typedef struct HParseState_ HParseState;
 
 typedef enum HParserBackend_ {