diff --git a/ChangeLog b/ChangeLog
index 93258c0686..d7c563bdce 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Mar 18 23:20:12 2014  Shota Fukumori  <her@sorah.jp>
+
+	* vm_eval.c (eval_string_with_cref): Unify to use NIL_P.
+
 Tue Mar 18 22:03:41 2014  Shota Fukumori  <her@sorah.jp>
 
 	* vm_eval.c (eval_string_with_cref): Use file path even if scope is
diff --git a/vm_eval.c b/vm_eval.c
index 5ae3e78b92..7b11e38d84 100644
--- a/vm_eval.c
+++ b/vm_eval.c
@@ -1223,7 +1223,7 @@ eval_string_with_cref(VALUE self, VALUE src, VALUE scope, NODE *const cref_arg,
 	    bind = Check_TypedStruct(scope, &ruby_binding_data_type);
 	    {
 		envval = bind->env;
-		if (absolute_path == Qnil && !NIL_P(bind->path)) {
+		if (NIL_P(absolute_path) && !NIL_P(bind->path)) {
 		    file = bind->path;
 		    line = bind->first_lineno;
 		    absolute_path = rb_current_realfilepath();