diff --git a/src/reference_table_test.cc b/src/reference_table_test.cc
index 4728cb0..1f065e6 100644
--- a/src/reference_table_test.cc
+++ b/src/reference_table_test.cc
@@ -12,7 +12,7 @@
 };
 
 TEST_F(ReferenceTableTest, Basics) {
-  Object* o1 = String::AllocFromModifiedUtf8(0, "hello");
+  Object* o1 = String::AllocFromModifiedUtf8("hello");
   Object* o2 = ShortArray::Alloc(0);
 
   // TODO: rewrite Dump to take a std::ostream& so we can test it better.