diff --git a/paddle/operators/box_coder_op.cc b/paddle/operators/box_coder_op.cc
index 3836cef96d8725c892bfb63ca8abcdbcda936f02..539813d4858b8faef386047f9ef64aa232aefca1 100644
--- a/paddle/operators/box_coder_op.cc
+++ b/paddle/operators/box_coder_op.cc
@@ -24,7 +24,7 @@ class BoxCoderOp : public framework::OperatorWithKernel {
                    "Input(PriorBox) of BoxCoderOp should not be null.");
     PADDLE_ENFORCE(ctx->HasInput("PriorBoxVar"),
                    "Input(PriorBoxVar) of BoxCoderOp should not be null.");
-    PADDLE_ENFORCE(ctx->HasInput("PriorBox"),
+    PADDLE_ENFORCE(ctx->HasInput("TargetBox"),
                    "Input(TargetBox) of BoxCoderOp should not be null.");
     PADDLE_ENFORCE(ctx->HasOutput("OutputBox"),
                    "Output(OutputBox) of BoxCoderOp should not be null.");