1 files changed, 1 insertions, 1 deletions
diff --git a/ruby.h b/ruby.h
index 95b4c4ca78..abf9e11085 100644
--- a/ruby.h
+++ b/ruby.h
@@ -574,7 +574,7 @@ void rb_warning __((const char*, ...));		/* reports if `-w' specified */
 void rb_sys_warning __((const char*, ...));	/* reports if `-w' specified */
 void rb_warn __((const char*, ...));		/* reports always */
 
-typedef VALUE rb_block_call_func _((VALUE, VALUE, int, VALUE*));
+typedef VALUE rb_block_call_func _((VALUE, VALUE));
 
 VALUE rb_each _((VALUE));
 VALUE rb_yield _((VALUE));