diff --git a/src/_macosx.m b/src/_macosx.m
index fda928536ab5..09838eccaf98 100755
--- a/src/_macosx.m
+++ b/src/_macosx.m
@@ -1236,7 +1236,7 @@ -(void)drawRect:(NSRect)rect
     CGContextRef cr = [[NSGraphicsContext currentContext] CGContext];
 
     if (!(renderer = PyObject_CallMethod(canvas, "get_renderer", ""))
-        || !(renderer_buffer = PyObject_GetAttrString(renderer, "_renderer"))) {
+        || !(renderer_buffer = PyObject_CallMethod(renderer, "buffer_rgba", ""))) {
         PyErr_Print();
         goto exit;
     }