diff --git a/webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red_unittest.cc b/webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red_unittest.cc
index 92f748ce8..b26273479 100644
--- a/webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red_unittest.cc
+++ b/webrtc/modules/audio_coding/codecs/red/audio_encoder_copy_red_unittest.cc
@@ -308,14 +308,14 @@ TEST_F(AudioEncoderCopyRedDeathTest, WrongFrameSize) {
   EXPECT_DEATH(Encode(), "");
 }
 
-// Test fails memcheck.
-// https://code.google.com/p/webrtc/issues/detail?id=4108
-TEST_F(AudioEncoderCopyRedDeathTest, DISABLED_NullSpeechEncoder) {
-  AudioEncoderCopyRed* red;
+TEST_F(AudioEncoderCopyRedDeathTest, NullSpeechEncoder) {
+  AudioEncoderCopyRed* red = NULL;
   AudioEncoderCopyRed::Config config;
   config.speech_encoder = NULL;
   EXPECT_DEATH(red = new AudioEncoderCopyRed(config),
                "Speech encoder not provided.");
+  // The delete operation is needed to avoid leak reports from memcheck.
+  delete red;
 }
 
 #endif  // GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)