--- a/browser/config/mozconfigs/win32/mingw32
+++ b/browser/config/mozconfigs/win32/mingw32
@@ -35,19 +35,16 @@ MOZ_AUTOMATION_INSTALLER=0
 
 # MinGW Stuff
 ac_add_options --target=i686-w64-mingw32
 ac_add_options --with-toolchain-prefix=i686-w64-mingw32-
 
 ac_add_options --enable-debug
 ac_add_options --disable-optimize
 
-# GCC compiling for Windows exposes a lot of warnings. We are tracking them in Bug 1394433
-ac_add_options --disable-warnings-as-errors
-
 # Temporary config settings until we get these working on mingw
 ac_add_options --disable-tests
 ac_add_options --disable-accessibility # https://sourceforge.net/p/mingw-w64/bugs/648/
 
 # Long story
 ac_add_options --disable-sandbox # Bug 1230910
 ac_add_options --disable-stylo # Bug 1390583