diff --git a/server/gameserver/ability.cc b/server/gameserver/ability.cc
index 5adf116a..ba57f96b 100644
--- a/server/gameserver/ability.cc
+++ b/server/gameserver/ability.cc
@@ -254,18 +254,22 @@ void Ability::RecalcAttrAddition(int attr_id)
     list_head* next = nullptr;
     float new_val = 0.0f;
     bool inited = false;
-    list_for_each_safe(pos, next, head) {
-        AttrAddition* e = list_entry(pos,
-                                     AttrAddition,
-                                     entry);
-        if (IsMulCalc(attr_id)) {
-            if (!inited) {
-                new_val = 1;
-                inited = true;
+    if (attr_id == kHAT_vSpeedRateIn) {
+
+    } else {
+        list_for_each_safe(pos, next, head) {
+            AttrAddition* e = list_entry(pos,
+                                         AttrAddition,
+                                         entry);
+            if (IsMulCalc(attr_id)) {
+                if (!inited) {
+                    new_val = 1;
+                    inited = true;
+                }
+                new_val *= 1 + e->value;
+            } else {
+                new_val += e->value;
             }
-            new_val *= 1 + e->value;
-        } else {
-            new_val += e->value;
         }
     }
     if (IsValidHumanAttr(attr_id)) {