diff --git a/app/services/blockchains_service.rb b/app/services/blockchains_service.rb
index 5014809a2..326502054 100644
--- a/app/services/blockchains_service.rb
+++ b/app/services/blockchains_service.rb
@@ -29,7 +29,7 @@ class BlockchainsService
       Rails.logger.info(bc.network_id)
       Rails.logger.info(bc.port)
       network_ids << bc.network_id unless bc.network_id == nil
-      ports << bc.port unless bc.port != nil
+      ports << bc.port unless bc.port == nil
     end
     Rails.logger.info(network_ids)
     Rails.logger.info(ports)