1 files changed, 2 insertions, 1 deletions
diff --git a/intern/cycles/kernel/closure/bssrdf.h b/intern/cycles/kernel/closure/bssrdf.h
index 4d88a822821..de65451d82c 100644
--- a/intern/cycles/kernel/closure/bssrdf.h
+++ b/intern/cycles/kernel/closure/bssrdf.h
@@ -438,7 +438,8 @@ ccl_device void bssrdf_sample(const ShaderClosure *sc, float xi, float *r, float
   }
   else if (xi < 2.0f) {
     xi -= 1.0f;
-    radius = (bssrdf->radius.x > 0.0f) ? bssrdf->radius.y : bssrdf->radius.z;
+    radius = (bssrdf->radius.x > 0.0f && bssrdf->radius.y > 0.0f) ? bssrdf->radius.y :
+                                                                    bssrdf->radius.z;
   }
   else {
     xi -= 2.0f;