diff --git a/extra/onnx.py b/extra/onnx.py
index 61a557bb4b..86fe64d0fb 100644
--- a/extra/onnx.py
+++ b/extra/onnx.py
@@ -153,7 +153,7 @@ def get_run_onnx(onnx_model: ModelProto):
         if n.op_type == "Add": ret = inp[0] + inp[1]
         if n.op_type == "Sub": ret = inp[0] - inp[1]
         if n.op_type == "Mul": ret = inp[0] * inp[1]
-        if n.op_type == "Pow": ret = inp[0] ** inp[1]
+        if n.op_type == "Pow": ret = (inp[0] ** inp[1]).cast(inp[0].dtype)
       elif n.op_type == "Split":
         if 'split' not in opt: opt['split'] = [int(x) for x in safe_numpy(inp[1])]  # split can be a tensor
         if 'axis' not in opt: opt['axis'] = 0