diff --git a/dbms/src/Common/HashTable/Hash.h b/dbms/src/Common/HashTable/Hash.h
index 575db9c8f48..19c8c66cf0c 100644
--- a/dbms/src/Common/HashTable/Hash.h
+++ b/dbms/src/Common/HashTable/Hash.h
@@ -103,16 +103,20 @@ inline UInt32 updateWeakHash32(const DB::UInt8 * pos, size_t size, DB::UInt32 up
             case 1:
                 value_ptr[0] = pos[0];
                 break;
-            case 3:
-                value_ptr[2] = pos[2];
             case 2:
                 *reinterpret_cast<uint16_t *>(value_ptr) = *reinterpret_cast<const uint16_unaligned_t *>(pos);
                 break;
-            case 5:
-                value_ptr[4] = pos[4];
+            case 3:
+                *reinterpret_cast<uint16_t *>(value_ptr) = *reinterpret_cast<const uint16_unaligned_t *>(pos);
+                value_ptr[2] = pos[2];
+                break;
             case 4:
                 *reinterpret_cast<uint32_t *>(value_ptr) = *reinterpret_cast<const uint32_unaligned_t *>(pos);
                 break;
+            case 5:
+                *reinterpret_cast<uint32_t *>(value_ptr) = *reinterpret_cast<const uint32_unaligned_t *>(pos);
+                value_ptr[4] = pos[4];
+                break;
             case 6:
                 *reinterpret_cast<uint32_t *>(value_ptr) = *reinterpret_cast<const uint32_unaligned_t *>(pos);
                 *reinterpret_cast<uint16_t *>(value_ptr + 4) = *reinterpret_cast<const uint16_unaligned_t *>(pos + 4);