diff --git a/intern/cycles/kernel/geom/geom_curve.h b/intern/cycles/kernel/geom/geom_curve.h
index e1d225436a6..dabfb0c72c8 100644
--- a/intern/cycles/kernel/geom/geom_curve.h
+++ b/intern/cycles/kernel/geom/geom_curve.h
@@ -605,7 +605,6 @@ ccl_device_inline bool bvh_cardinal_curve_intersect(KernelGlobals *kg, Intersect
 				isect->type = type;
 				isect->u = u;
 				isect->v = gd;
-				/*isect->transparency = 1.0f - coverage; */
 				isect->t = t;
 				hit = true;
 			}
@@ -841,7 +840,6 @@ ccl_device_inline bool bvh_curve_intersect(KernelGlobals *kg, Intersection *isec
 				isect->type = type;
 				isect->u = z*invl;
 				isect->v = gd;
-				/*isect->transparency = 1.0f - adjradius;*/
 				isect->t = t;
 
 				return true;
@@ -1012,10 +1010,6 @@ ccl_device_inline float3 bvh_curve_refine(KernelGlobals *kg, ShaderData *sd, con
 	sd->dPdv = cross(tg, sd->Ng);
 #endif
 
-	/*add fading parameter for minimum pixel width with transparency bsdf*/
-	/*sd->curve_transparency = isect->transparency;*/
-	/*sd->curve_radius = sd->u * gd * l + r1;*/
-
 	if(isect->object != OBJECT_NONE) {
 #ifdef __OBJECT_MOTION__
 		Transform tfm = sd->ob_tfm;