diff --git a/ChangeLog b/ChangeLog
index 8d87d1a0ec..5ea4aea69f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Jun  2 21:29:28 2015  Koichi Sasada  <ko1@atdot.net>
+
+	* proc.c (proc_curry): remove a debug line.
+
 Tue Jun  2 12:43:46 2015  Koichi Sasada  <ko1@atdot.net>
 
 	* method.h: make rb_method_entry_t a VALUE.
diff --git a/proc.c b/proc.c
index faa82e33bf..73baf555ba 100644
--- a/proc.c
+++ b/proc.c
@@ -2655,7 +2655,6 @@ proc_curry(int argc, const VALUE *argv, VALUE self)
     else {
 	sarity = FIX2INT(arity);
 	if (rb_proc_lambda_p(self)) {
-	    bp();
 	    rb_check_arity(sarity, min_arity, max_arity);
 	}
     }