diff --git a/tinygrad/runtime/ops_cuda.py b/tinygrad/runtime/ops_cuda.py
index 7f8fc265ba..2c3d9e8781 100644
--- a/tinygrad/runtime/ops_cuda.py
+++ b/tinygrad/runtime/ops_cuda.py
@@ -24,7 +24,7 @@ class CUDAProgram:
     global_size = global_size + [1] * (3 - len(global_size))
     assert all(x%y == 0 for x,y in zip(global_size, local_size)), f"local:{local_size} must divide global:{global_size}"
     global_size = [x//y for x,y in zip(global_size, local_size)]
-    self.prg(*args, block=tuple(local_size), grid=tuple(global_size))
+    self.prg(*[x._cl for x in args], block=tuple(local_size), grid=tuple(global_size))
 
 class CUDACodegen(GPUCodegen):
   lang = GPULanguage(