diff --git a/intern/cycles/kernel/osl/osl_closures.cpp b/intern/cycles/kernel/osl/osl_closures.cpp
index 14c5c1c3db5..2ebc76eb2ff 100644
--- a/intern/cycles/kernel/osl/osl_closures.cpp
+++ b/intern/cycles/kernel/osl/osl_closures.cpp
@@ -5,7 +5,7 @@
  * All Rights Reserved.
  *
  * Modifications Copyright 2011, Blender Foundation.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
@@ -242,7 +242,11 @@ static void register_closure(OSL::ShadingSystem *ss, const char *name, int id, O
 	/* optimization: it's possible to not use a prepare function at all and
 	 * only initialize the actual class when accessing the closure component
 	 * data, but then we need to map the id to the class somehow */
-	ss->register_closure(name, id, params, prepare, NULL, 16);
+	 #if OSL_LIBRARY_VERSION_CODE >= 10900
+	 	ss->register_closure(name, id, params, prepare, NULL);
+	 #else
+	 	ss->register_closure(name, id, params, prepare, NULL, 16);
+	 #endif
 }
 
 void OSLShader::register_closures(OSLShadingSystem *ss_)
@@ -638,4 +642,3 @@ ClosureParam *closure_bsdf_microfacet_multi_ggx_glass_fresnel_params()
 CCLOSURE_PREPARE(closure_bsdf_microfacet_multi_ggx_glass_fresnel_prepare, MicrofacetMultiGGXGlassFresnelClosure);
 
 CCL_NAMESPACE_END
-