diff --git a/src/igl/metal/RenderCommandEncoder.mm b/src/igl/metal/RenderCommandEncoder.mm
index de82808e7c..4d89a8ba08 100644
--- a/src/igl/metal/RenderCommandEncoder.mm
+++ b/src/igl/metal/RenderCommandEncoder.mm
@@ -267,6 +267,9 @@
     auto& metalBuffer = static_cast<Buffer&>(*buffer);
     [encoder_ setVertexBuffer:metalBuffer.get() offset:offset atIndex:index];
     [encoder_ setFragmentBuffer:metalBuffer.get() offset:offset atIndex:index];
+  } else {
+    [encoder_ setVertexBuffer:nil offset:0 atIndex:index];
+    [encoder_ setFragmentBuffer:nil offset:0 atIndex:index];
   }
 }