--- a/dom/media/gtest/TestAudioSegment.cpp
+++ b/dom/media/gtest/TestAudioSegment.cpp
@@ -229,18 +229,18 @@ void TestDownmixStereo()
 
   AudioChannelsDownMix(inputptr, output, 1, arraySize);
 
   for (size_t i = 0; i < arraySize; i++) {
     ASSERT_TRUE(output[0][i] == GetSilentValue<T>());
     ASSERT_TRUE(output[0][i] == GetSilentValue<T>());
   }
 
-  delete output[0];
-  delete output;
+  delete [] output[0];
+  delete [] output;
 }
 
 TEST(AudioSegment, Test)
 {
   TestInterleaveAndConvert<float, float>();
   TestInterleaveAndConvert<float, int16_t>();
   TestInterleaveAndConvert<int16_t, float>();
   TestInterleaveAndConvert<int16_t, int16_t>();