diff --git a/vm_method.c b/vm_method.c
index 38da273feb..1508b9a481 100644
--- a/vm_method.c
+++ b/vm_method.c
@@ -285,10 +285,10 @@ the_location(void)
     int line;
 
     if (!cfp) {
-        return Qnil;
+        return Qfalse;
     }
     else if (! (line = rb_vm_get_sourceline(cfp))) {
-        return Qnil;
+        return Qfalse;
     }
     else {
         VALUE loc = rb_ary_new3(2, rb_iseq_path(cfp->iseq), INT2FIX(line));