diff --git a/src/main/java/com/google/api/generator/gapic/protoparser/Parser.java b/src/main/java/com/google/api/generator/gapic/protoparser/Parser.java
index 2b58e07f51e..c16246a70e9 100644
--- a/src/main/java/com/google/api/generator/gapic/protoparser/Parser.java
+++ b/src/main/java/com/google/api/generator/gapic/protoparser/Parser.java
@@ -240,6 +240,8 @@ private static Map<String, Message> parseMessages(
       }
     }
     String pakkage = TypeParser.getPackage(messageDescriptor.getFile());
+    List<String> fieldNames =
+        messageDescriptor.getFields().stream().map(f -> f.getName()).collect(Collectors.toList());
     messages.put(
         messageName,
         Message.builder()