diff --git a/gfx/layers/d3d11/genshaders.py b/gfx/layers/d3d11/genshaders.py
old mode 100755
new mode 100644
index e1101d3fed8a..95b58a3667fb
--- a/gfx/layers/d3d11/genshaders.py
+++ b/gfx/layers/d3d11/genshaders.py
@@ -10,7 +10,6 @@ import subprocess
 import sys
 import tempfile
 import yaml
-import buildconfig
 
 def shell_main():
   parser = argparse.ArgumentParser()
@@ -71,10 +70,8 @@ def run_fxc(shader_model,
             shader_file,
             shader_name,
             output_fp):
-  fxc_location = buildconfig.substs['FXC']
-
   argv = [
-    fxc_location,
+    'fxc',
     '-nologo',
     '-T{0}'.format(shader_model),
     shader_file,
@@ -82,8 +79,6 @@ def run_fxc(shader_model,
     '-Vn{0}'.format(shader_name),
     '-Vi',
   ]
-  if 'Linux' in buildconfig.substs['HOST_OS_ARCH']:
-    argv.insert(0, buildconfig.substs['WINE'])
   if shader_model.startswith('vs_'):
     argv += ['-DVERTEX_SHADER']
   elif shader_model.startswith('ps_'):
@@ -97,7 +92,7 @@ def run_fxc(shader_model,
     proc_stdout = subprocess.check_output(argv)
     proc_stdout = decode_console_text(sys.stdout, proc_stdout)
     deps = find_dependencies(proc_stdout)
-    assert 'fxc2' in fxc_location or len(deps) > 0
+    assert len(deps) > 0
 
     with open(temp_filename, 'r') as temp_fp:
       output_fp.write(temp_fp.read())
diff --git a/gfx/layers/moz.build b/gfx/layers/moz.build
old mode 100755
new mode 100644
diff --git a/moz.configure b/moz.configure
index 2c498e64671b..e2639a02fd71 100755
--- a/moz.configure
+++ b/moz.configure
@@ -470,9 +470,6 @@ def nsis_flags(host):
 
 set_config('MAKENSISU_FLAGS', nsis_flags)
 
-fxc = check_prog('FXC', ('fxc.exe', 'fxc2.exe'), when=depends(target)(lambda t: t.kernel == 'WINNT'))
-wine = check_prog('WINE', ['wine'], when=depends(target, host)(lambda t, h: t.kernel == 'WINNT' and h.kernel == 'Linux'))
-
 # Fallthrough to autoconf-based configure
 include('build/moz.configure/old.configure')