diff --git a/paddle/fluid/operators/trace_op.cc b/paddle/fluid/operators/trace_op.cc
index 50f9f0b9f4d02bcf4029af5f14c2fa09b3363dcc..623d4c7fc23ba2477d720c46697760efb1dd1429 100644
--- a/paddle/fluid/operators/trace_op.cc
+++ b/paddle/fluid/operators/trace_op.cc
@@ -42,7 +42,8 @@ class TraceOp : public framework::OperatorWithKernel {
     PADDLE_ENFORCE_GE(
         x_dims.size(), 2,
         platform::errors::OutOfRange(
-            "trace requires an tensor of at least two dimensions"));
+            "Input's dim is out of range (expected at least 2, but got %ld).",
+            x_dims.size()));
     PADDLE_ENFORCE_LT(
         dim1_, x_dims.size(),
         platform::errors::OutOfRange(