diff --git a/src/field_poison.c b/src/field_poison.c
index f254a6d142e4..d952b4b640a5 100644
--- a/src/field_poison.c
+++ b/src/field_poison.c
@@ -89,7 +89,11 @@ static void Task_TryFieldPoisonWhiteOut(u8 taskId)
         if (AllMonsFainted())
         {
             // Battle facilities have their own white out script to handle the challenge loss
+#ifdef BUGFIX
+            if (InBattlePyramid() || InBattlePike() || InTrainerHillChallenge())
+#else
             if (InBattlePyramid() | InBattlePike() || InTrainerHillChallenge())
+#endif
                 gSpecialVar_Result = FLDPSN_FRONTIER_WHITEOUT;
             else
                 gSpecialVar_Result = FLDPSN_WHITEOUT;