diff --git a/src/mutator_test.cc b/src/mutator_test.cc
index 3e54cea..312b2d9 100644
--- a/src/mutator_test.cc
+++ b/src/mutator_test.cc
@@ -678,8 +678,8 @@ TYPED_TEST(MutatorTypedTest, Serialization) {
 
 TYPED_TEST(MutatorTypedTest, UnknownFieldTextFormat) {
   typename TestFixture::Message parsed;
-  EXPECT_FALSE(ParseTextMessage(kUnknownFieldInput, &parsed));
-  EXPECT_NE(SaveMessageAsText(parsed), kUnknownFieldExpected);
+  EXPECT_TRUE(ParseTextMessage(kUnknownFieldInput, &parsed));
+  EXPECT_EQ(SaveMessageAsText(parsed), kUnknownFieldExpected);
 }
 
 TYPED_TEST(MutatorTypedTest, DeepRecursion) {
diff --git a/src/text_format.cc b/src/text_format.cc
index fae6f6e..4479229 100644
--- a/src/text_format.cc
+++ b/src/text_format.cc
@@ -30,7 +30,7 @@ bool ParseTextMessage(const std::string& data, protobuf::Message* output) {
   TextFormat::Parser parser;
   parser.SetRecursionLimit(100);
   parser.AllowPartialMessage(true);
-  // parser.AllowUnknownField(true);
+  parser.AllowUnknownField(true);
   if (!parser.ParseFromString(data, output)) {
     output->Clear();
     return false;