diff --git a/be/src/vec/utils/util.hpp b/be/src/vec/utils/util.hpp
index 67c5bebbca8150..3c5f4f194aac9b 100644
--- a/be/src/vec/utils/util.hpp
+++ b/be/src/vec/utils/util.hpp
@@ -116,9 +116,11 @@ class VectorizedUtils {
         size_t size = dst.size();
         auto* __restrict l = dst.data();
         auto* __restrict r = src.data();
-        if (is_single && r[0]) {
-            for (size_t i = 0; i < size; ++i) {
-                l[i] = 1;
+        if (is_single) {
+            if (r[0]) {
+                for (size_t i = 0; i < size; ++i) {
+                    l[i] = 1;
+                }
             }
         } else {
             for (size_t i = 0; i < size; ++i) {