diff --git a/intern/cycles/kernel/osl/osl_bssrdf.cpp b/intern/cycles/kernel/osl/osl_bssrdf.cpp
index 94337290d20..84ef85e089d 100644
--- a/intern/cycles/kernel/osl/osl_bssrdf.cpp
+++ b/intern/cycles/kernel/osl/osl_bssrdf.cpp
@@ -62,18 +62,6 @@ public:
 };
 
 ClosureParam *closure_bssrdf_cubic_params()
-{
-	static ClosureParam params[] = {
-		CLOSURE_FLOAT3_PARAM(CubicBSSRDFClosure, sc.N),
-		CLOSURE_FLOAT3_PARAM(CubicBSSRDFClosure, radius),
-		//CLOSURE_FLOAT_PARAM(CubicBSSRDFClosure, sc.data1),
-	    CLOSURE_STRING_KEYPARAM("label"),
-	    CLOSURE_FINISH_PARAM(CubicBSSRDFClosure)
-	};
-	return params;
-}
-
-ClosureParam *closure_bssrdf_cubic_extended_params()
 {
 	static ClosureParam params[] = {
 		CLOSURE_FLOAT3_PARAM(CubicBSSRDFClosure, sc.N),
@@ -103,18 +91,6 @@ public:
 };
 
 ClosureParam *closure_bssrdf_gaussian_params()
-{
-	static ClosureParam params[] = {
-		CLOSURE_FLOAT3_PARAM(GaussianBSSRDFClosure, sc.N),
-		CLOSURE_FLOAT3_PARAM(GaussianBSSRDFClosure, radius),
-		//CLOSURE_FLOAT_PARAM(GaussianBSSRDFClosure, sc.data1),
-	    CLOSURE_STRING_KEYPARAM("label"),
-	    CLOSURE_FINISH_PARAM(GaussianBSSRDFClosure)
-	};
-	return params;
-}
-
-ClosureParam *closure_bssrdf_gaussian_extended_params()
 {
 	static ClosureParam params[] = {
 		CLOSURE_FLOAT3_PARAM(GaussianBSSRDFClosure, sc.N),
diff --git a/intern/cycles/kernel/osl/osl_closures.cpp b/intern/cycles/kernel/osl/osl_closures.cpp
index 2d716103b85..6311be6bfcc 100644
--- a/intern/cycles/kernel/osl/osl_closures.cpp
+++ b/intern/cycles/kernel/osl/osl_closures.cpp
@@ -244,8 +244,6 @@ void OSLShader::register_closures(OSLShadingSystem *ss_)
 		bsdf_diffuse_toon_params(), bsdf_diffuse_toon_prepare);
 	register_closure(ss, "glossy_toon", id++,
 		bsdf_glossy_toon_params(), bsdf_glossy_toon_prepare);
-	register_closure(ss, "specular_toon", id++,
-		bsdf_glossy_toon_params(), bsdf_glossy_toon_prepare);
 	register_closure(ss, "westin_backscatter", id++,
 		bsdf_westin_backscatter_params(), bsdf_westin_backscatter_prepare);
 	register_closure(ss, "westin_sheen", id++,
@@ -267,10 +265,6 @@ void OSLShader::register_closures(OSLShadingSystem *ss_)
 		closure_bssrdf_cubic_params(), closure_bssrdf_cubic_prepare);
 	register_closure(ss, "bssrdf_gaussian", id++,
 		closure_bssrdf_gaussian_params(), closure_bssrdf_gaussian_prepare);
-	register_closure(ss, "bssrdf_cubic", id++,
-		closure_bssrdf_cubic_extended_params(), closure_bssrdf_cubic_prepare);
-	register_closure(ss, "bssrdf_gaussian", id++,
-		closure_bssrdf_gaussian_extended_params(), closure_bssrdf_gaussian_prepare);
 
 	register_closure(ss, "hair_reflection", id++,
 		bsdf_hair_reflection_params(), bsdf_hair_reflection_prepare);
diff --git a/intern/cycles/kernel/osl/osl_closures.h b/intern/cycles/kernel/osl/osl_closures.h
index a543907e884..58d215295dc 100644
--- a/intern/cycles/kernel/osl/osl_closures.h
+++ b/intern/cycles/kernel/osl/osl_closures.h
@@ -52,8 +52,6 @@ OSL::ClosureParam *closure_westin_backscatter_params();
 OSL::ClosureParam *closure_westin_sheen_params();
 OSL::ClosureParam *closure_bssrdf_cubic_params();
 OSL::ClosureParam *closure_bssrdf_gaussian_params();
-OSL::ClosureParam *closure_bssrdf_cubic_extended_params();
-OSL::ClosureParam *closure_bssrdf_gaussian_extended_params();
 OSL::ClosureParam *closure_henyey_greenstein_volume_params();
 
 void closure_emission_prepare(OSL::RendererServices *, int id, void *data);
diff --git a/intern/cycles/kernel/shaders/stdosl.h b/intern/cycles/kernel/shaders/stdosl.h
index e39db8097f2..94ebae16ba3 100644
--- a/intern/cycles/kernel/shaders/stdosl.h
+++ b/intern/cycles/kernel/shaders/stdosl.h
@@ -507,11 +507,6 @@ closure color hair_transmission(normal N, float roughnessu, float roughnessv, ve
 closure color henyey_greenstein(float g) BUILTIN;
 closure color absorption() BUILTIN;
 
-// Backwards compatibility
-closure color bssrdf_cubic(normal N, vector radius) BUILTIN;
-closure color bssrdf_gaussian(normal N, vector radius) BUILTIN;
-closure color specular_toon(normal N, float size, float smooth) BUILTIN;
-
 // Renderer state
 int raytype (string typename) BUILTIN;
 // the individual 'isFOOray' functions are deprecated