diff --git a/be/src/exprs/expr.cpp b/be/src/exprs/expr.cpp
index e971006751500e..d4e15e12172019 100644
--- a/be/src/exprs/expr.cpp
+++ b/be/src/exprs/expr.cpp
@@ -486,9 +486,6 @@ int Expr::compute_results_layout(
                 || exprs[i]->type().type == TYPE_VARCHAR) {
             data[i].byte_size = 16;
             data[i].variable_length = true;
-        } else if (exprs[i]->type().type == TYPE_DECIMAL) {
-            data[i].byte_size = get_byte_size(exprs[i]->type().type);
-            data[i].variable_length = true;
         } else {
             data[i].byte_size = get_byte_size(exprs[i]->type().type);
             data[i].variable_length = false;