--- a/dom/media/webrtc/moz.build
+++ b/dom/media/webrtc/moz.build
@@ -55,25 +55,16 @@ UNIFIED_SOURCES += [
 ]
 
 EXPORTS.mozilla += [
     'PeerIdentity.h',
 ]
 
 include('/ipc/chromium/chromium-config.mozbuild')
 
-# Suppress some GCC/clang warnings being treated as errors:
-#  - about attributes on forward declarations for types that are already
-#    defined, which complains about important MOZ_EXPORT attributes for 
-#    android API types
-if CONFIG['GNU_CC'] or CONFIG['CLANG_CL']:
-  CXXFLAGS += [
-    '-Wno-error=attributes'
-  ]
-
 FINAL_LIBRARY = 'xul'
 if CONFIG['OS_ARCH'] == 'WINNT':
     DEFINES['NOMINMAX'] = True
 
 
 if CONFIG['_MSC_VER']:
   CXXFLAGS += [
     '-wd4275', # non dll-interface class used as base for dll-interface class