diff --git a/compiler/cpp/src/generate/t_java_generator.cc b/compiler/cpp/src/generate/t_java_generator.cc
index e3f5449..8381f8e 100644
--- a/compiler/cpp/src/generate/t_java_generator.cc
+++ b/compiler/cpp/src/generate/t_java_generator.cc
@@ -985,7 +985,7 @@
   if (gen_hash_code_) {
     indent(out) << "@Override" << endl;
     indent(out) << "public int hashCode() {" << endl;
-    indent(out) << "  return new HashCodeBuilder().append(getSetField()).append(getFieldValue()).toHashCode();" << endl;
+    indent(out) << "  return new HashCodeBuilder().append(getSetField().getThriftFieldId()).append(getFieldValue()).toHashCode();" << endl;
     indent(out) << "}";
   } else {
     indent(out) << "/**" << endl;