diff --git a/paddle/fluid/operators/jit/more/mix/mix.cc b/paddle/fluid/operators/jit/more/mix/mix.cc
index 924278eaa23e20aa2aa0e356525ae6f4a54cd419..d9ecd7672e843aa3765340c2b5b2411d23170f9f 100644
--- a/paddle/fluid/operators/jit/more/mix/mix.cc
+++ b/paddle/fluid/operators/jit/more/mix/mix.cc
@@ -77,7 +77,7 @@ void LSTMCtHt(lstm_t* step, const lstm_attr_t* attr) {
   auto vadd_d2 = Get<vadd, XYZNTuples<T>, platform::CPUPlace>(d2);
   auto act_gate_d = getActFunc(attr->act_gate, d);
   auto act_gate_d2 = getActFunc(attr->act_gate, d2);
-  auto act_gate_d3 = getActFunc(attr->act_gate, d2);
+  auto act_gate_d3 = getActFunc(attr->act_gate, d3);
   auto act_cand_d = getActFunc(attr->act_cand, d);
   auto act_cell_d = getActFunc(attr->act_cell, d);