diff --git a/intern/cycles/blender/blender_python.cpp b/intern/cycles/blender/blender_python.cpp
index e82eb67aae5..b756d6acdb2 100644
--- a/intern/cycles/blender/blender_python.cpp
+++ b/intern/cycles/blender/blender_python.cpp
@@ -363,7 +363,12 @@ static PyObject *osl_update_node_func(PyObject *self, PyObject *args)
 		/* find socket socket */
 		BL::NodeSocket b_sock(PointerRNA_NULL);
 		if (param->isoutput) {
+#if OSL_LIBRARY_VERSION_CODE < 10500
 			b_sock = b_node.outputs[param->name];
+#else
+			b_sock = b_node.outputs[param->name.string()];
+#endif
+
 			
 			/* remove if type no longer matches */
 			if(b_sock && b_sock.bl_idname() != socket_type) {
@@ -372,7 +377,11 @@ static PyObject *osl_update_node_func(PyObject *self, PyObject *args)
 			}
 		}
 		else {
+#if OSL_LIBRARY_VERSION_CODE < 10500
 			b_sock = b_node.inputs[param->name];
+#else
+			b_sock = b_node.inputs[param->name.string()];
+#endif
 			
 			/* remove if type no longer matches */
 			if(b_sock && b_sock.bl_idname() != socket_type) {