diff --git a/scons/gallium.py b/scons/gallium.py
index a411277..a96edb8 100644
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -452,7 +452,7 @@ def generate(env):
         if env['build'] in ('release', 'opt'):
             if not env['clang']:
                 ccflags += [
-                    '/GL', # enable whole program optimization
+                    '', # enable whole program optimization
                 ]
         else:
             ccflags += [