diff --git a/server/gameserver/ability.cc b/server/gameserver/ability.cc
index 316af149..f015d8d1 100644
--- a/server/gameserver/ability.cc
+++ b/server/gameserver/ability.cc
@@ -464,12 +464,16 @@ int Ability::GetSwitchTimes(int type)
 
 float Ability::GetAttr(int attr_id)
 {
+    float val = 0.0f;
     if (IsValidHumanAttr(attr_id)) {
-        return std::get<0>(attr_add_[attr_id]) + std::get<0>(attr_dec_[attr_id]);
+        val =  std::get<0>(attr_add_[attr_id]) + std::get<0>(attr_dec_[attr_id]);
     } else if (IsValidHumanVirtualAttr(attr_id)) {
-        return std::get<0>(vattr_add_[attr_id - kHVAT_Begin]) + std::get<0>(vattr_dec_[attr_id - kHVAT_Begin]);
+        val = std::get<0>(vattr_add_[attr_id - kHVAT_Begin]) + std::get<0>(vattr_dec_[attr_id - kHVAT_Begin]);
     }
-    return 0.0f;
+    if (IsMulCalc(attr_id)) {
+        val = 1 - val;
+    }
+    return val;
 }
 
 bool Ability::HasAttr(int attr_id)