1 files changed, 1 insertions, 1 deletions
diff --git a/intern.h b/intern.h
index eef7235c70..7c9308e3f1 100644
--- a/intern.h
+++ b/intern.h
@@ -89,7 +89,7 @@ VALUE rb_big_and _((VALUE, VALUE));
 VALUE rb_big_or _((VALUE, VALUE));
 VALUE rb_big_xor _((VALUE, VALUE));
 VALUE rb_big_lshift _((VALUE, VALUE));
-VALUE rb_big_rand _((VALUE, double));
+VALUE rb_big_rand _((VALUE, double*));
 /* class.c */
 VALUE rb_class_boot _((VALUE));
 VALUE rb_class_new _((VALUE));