--- a/content/media/AudioNodeEngineNEON.cpp
+++ b/content/media/AudioNodeEngineNEON.cpp
@@ -1,17 +1,18 @@
 /* -*- mode: c++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* this source code form is subject to the terms of the mozilla public
  * license, v. 2.0. if a copy of the mpl was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "AudioNodeEngineNEON.h"
 #include <arm_neon.h>
 
-#ifdef DEBUG
+//#ifdef DEBUG
+#if 0 // see bug 921099
   #define ASSERT_ALIGNED(ptr)                                                  \
             MOZ_ASSERT((((uintptr_t)ptr + 15) & ~0x0F) == (uintptr_t)ptr,      \
                        #ptr " has to be aligned 16-bytes aligned.");
 #else
   #define ASSERT_ALIGNED(ptr)
 #endif
 
 #define ADDRESS_OF(array, index) ((float32_t*)&array[index])