diff --git a/paddle/fluid/operators/lookup_table_op.cc b/paddle/fluid/operators/lookup_table_op.cc
index 8b7d7a5270..7d88c1c70a 100644
--- a/paddle/fluid/operators/lookup_table_op.cc
+++ b/paddle/fluid/operators/lookup_table_op.cc
@@ -68,7 +68,7 @@ class LookupTableOpMaker : public framework::OpProtoAndCheckerMaker {
              "(Tensor) The input represents embedding tensors, "
              "which is a learnable parameter.");
     AddInput("Ids",
-             "An input with type int32 or int64 "
+             "An input with type int64 "
              "contains the ids to be looked up in W. "
              "The last dimension size must be 1.");
     AddOutput("Out", "The lookup results, which have the same type as W.");
diff --git a/paddle/fluid/operators/lookup_table_v2_op.cc b/paddle/fluid/operators/lookup_table_v2_op.cc
index f1b982356a..24d6df88ce 100644
--- a/paddle/fluid/operators/lookup_table_v2_op.cc
+++ b/paddle/fluid/operators/lookup_table_v2_op.cc
@@ -65,7 +65,7 @@ class LookupTableV2OpMaker : public framework::OpProtoAndCheckerMaker {
              "(Tensor) The input represents embedding tensors, "
              "which is a learnable parameter.");
     AddInput("Ids",
-             "An input with type int32 or int64 "
+             "An input with type int64 "
              "contains the ids to be looked up in W. "
              "The last dimension size must be 1.");
     AddOutput("Out", "The lookup results, which have the same type as W.");