diff --git a/laborious/activities/opc.py b/laborious/activities/opc.py
index debb011..7019cb2 100644
--- a/laborious/activities/opc.py
+++ b/laborious/activities/opc.py
@@ -179,10 +179,10 @@ class OPC(BaseActivity):
 
         success = True
 
-        success_count = 0
-
         for server_id, config in opc_output_config.items():
 
+            success_count = 0
+
             if not self.validate_server(server_id, metadata):
                 success = False
                 continue