diff --git a/intern/cycles/kernel/shaders/SConscript b/intern/cycles/kernel/shaders/SConscript
index f1c30395b70..36b86d7b4f6 100644
--- a/intern/cycles/kernel/shaders/SConscript
+++ b/intern/cycles/kernel/shaders/SConscript
@@ -14,7 +14,7 @@ if env['WITH_BF_CYCLES_OSL']:
     shaders = env.Clone()
 
     # osl compiler
-    osl_compiler = env._canonicalize(env.subst(env['BF_OSL_COMPILER']))
+    osl_compiler = File(env.subst(env['BF_OSL_COMPILER'])).abspath
 
     # build directory
     root_build_dir = normpath(env['BF_BUILDDIR'])