diff --git a/tinygrad/runtime/ops_nv.py b/tinygrad/runtime/ops_nv.py
index ba58e26ab0..38c9072faa 100644
--- a/tinygrad/runtime/ops_nv.py
+++ b/tinygrad/runtime/ops_nv.py
@@ -199,7 +199,7 @@ class NVCopyQueue(NVCommandQueue, HWCopyQueue):
     if src is not None: self._patch(cmd_idx, offset=1, data=data64(src))
 
   def _signal(self, signal, value=0):
-    self.q += [nvmethod(4, nv_gpu.NVC6B5_SET_SEMAPHORE_A, 4), *data64(signal.signal_addr), value, 4]
+    self.q += [nvmethod(4, nv_gpu.NVC6B5_SET_SEMAPHORE_A, 3), *data64(signal.signal_addr), value]
     self.q += [nvmethod(4, nv_gpu.NVC6B5_LAUNCH_DMA, 1), 0x14]
 
   def _update_signal(self, cmd_idx, signal=None, value=None):