--- libao-1.1.0/src/plugins/macosx/ao_macosx.c	2010-12-06 20:09:31.000000000 +0000
+++ libao-1.1.0/src/plugins/macosx/ao_macosx.c	2013-03-10 04:33:48.000000000 +0000
@@ -241,7 +241,7 @@ int ao_plugin_open(ao_device *device, ao
   ComponentDescription desc;
   AudioStreamBasicDescription requestedDesc;
   AURenderCallbackStruct      input;
-  UInt32 i_param_size;
+  UInt32 i_param_size, requestedEndian;
 
   /* Locate the default output audio unit */
   desc.componentType = kAudioUnitType_Output;
@@ -280,6 +280,7 @@ int ao_plugin_open(ao_device *device, ao
       requestedDesc.mFormatFlags |= kAudioFormatFlagIsBigEndian;
     break;
   }
+  requestedEndian = requestedDesc.mFormatFlags & kAudioFormatFlagIsBigEndian;
   if (format->bits > 8)
     requestedDesc.mFormatFlags |= kAudioFormatFlagIsSignedInteger;
 
@@ -337,7 +338,7 @@ int ao_plugin_open(ao_device *device, ao
     return 0;
   }
   if((requestedDesc.mFormatFlags & kAudioFormatFlagsNativeEndian) !=
-     kAudioFormatFlagsNativeEndian){
+     requestedEndian){
     aerror("Could not configure output endianness\n");
     return 0;
   }