diff --git a/pytorch3d/csrc/pulsar/include/renderer.forward.device.h b/pytorch3d/csrc/pulsar/include/renderer.forward.device.h
index 7e2a11f3..3f0412f5 100644
--- a/pytorch3d/csrc/pulsar/include/renderer.forward.device.h
+++ b/pytorch3d/csrc/pulsar/include/renderer.forward.device.h
@@ -102,6 +102,7 @@ void forward(
       self->workspace_d,
       self->workspace_size,
       stream);
+  CHECKLAUNCH();
   SORT_ASCENDING_WS(
       self->min_depth_d,
       self->min_depth_sorted_d,
@@ -111,6 +112,7 @@ void forward(
       self->workspace_d,
       self->workspace_size,
       stream);
+  CHECKLAUNCH();
   SORT_ASCENDING_WS(
       self->min_depth_d,
       self->min_depth_sorted_d,