diff --git a/dex_screener/service/dex/omnipool/omnipool_service.py b/dex_screener/service/dex/omnipool/omnipool_service.py
index 2a153c6..2fc59a6 100644
--- a/dex_screener/service/dex/omnipool/omnipool_service.py
+++ b/dex_screener/service/dex/omnipool/omnipool_service.py
@@ -93,6 +93,9 @@ async def  register_swap(cls, event: SubstrateEvent[OmnipoolBuyExecutedPayload |
 
             case _:
                 raise InvalidEventDataError(f'Unhandled Omnipool Swap Event: {event}.')
+        if minor_amount_in * minor_amount_out == 0:
+            cls.logger.warning('Invalid Swap Event: minor amount must be natural!')
+            return 
 
         asset_in = await Asset.get(id=asset_in_id)
         asset_out = await Asset.get(id=asset_out_id)