diff --git a/protoc-c/c_helpers.h b/protoc-c/c_helpers.h
index 055528b..062d330 100644
--- a/protoc-c/c_helpers.h
+++ b/protoc-c/c_helpers.h
@@ -175,14 +175,10 @@ int compare_name_indices_by_name(const void*, const void*);
 // Return the syntax version of the file containing the field.
 // This wrapper is needed to be able to compile against protobuf2.
 inline int FieldSyntax(const FieldDescriptor* field) {
-#ifdef HAVE_PROTO3
-# if GOOGLE_PROTOBUF_VERSION >= 4023000
+#if GOOGLE_PROTOBUF_VERSION >= 4023000
   return FileDescriptorLegacy(field->file()).syntax() == FileDescriptorLegacy::SYNTAX_PROTO3 ? 3 : 2;
-# else
-  return field->file()->syntax() == FileDescriptor::SYNTAX_PROTO3 ? 3 : 2;
-# endif
 #else
-  return 2;
+  return field->file()->syntax() == FileDescriptor::SYNTAX_PROTO3 ? 3 : 2;
 #endif
 }