diff --git a/paddle/fluid/operators/detection/box_clip_op.cc b/paddle/fluid/operators/detection/box_clip_op.cc
index fb94d0fbc6..e47027d98c 100644
--- a/paddle/fluid/operators/detection/box_clip_op.cc
+++ b/paddle/fluid/operators/detection/box_clip_op.cc
@@ -45,7 +45,7 @@ class BoxClipOp : public framework::OperatorWithKernel {
  protected:
   framework::OpKernelType GetExpectedKernelType(
       const framework::ExecutionContext& ctx) const override {
-    auto data_type = framework::GetDataTypeOfVar(ctx.InputVar("RpnRois"));
+    auto data_type = framework::GetDataTypeOfVar(ctx.InputVar("InputBox"));
     return framework::OpKernelType(data_type, platform::CPUPlace());
   }
 };