diff --git a/base/elect.c b/base/elect.c
index a94462b..291e04a 100644
--- a/base/elect.c
+++ b/base/elect.c
@@ -697,7 +697,7 @@ static int ElectJudgeCDTELoopGain(const char *result, int len)
     else
     {
         PlatShowEMessage("CD TE LOOP GAIN NG: %d\n", value);
-        return (ConSlim == 1) ? 0 : 1;
+        return ((ConSlim == 1) || (ConType == MECHA_TYPE_40)) ? 0 : 1;
     }
 }