diff --git a/roles/copr/backend/templates/cleanup-unused-redhat-subscriptions b/roles/copr/backend/templates/cleanup-unused-redhat-subscriptions
index 3b53cbd99d..db1429f4e5 100644
--- a/roles/copr/backend/templates/cleanup-unused-redhat-subscriptions
+++ b/roles/copr/backend/templates/cleanup-unused-redhat-subscriptions
@@ -89,9 +89,9 @@ def filter_out_systems(systems):
     copr_instance = _copr_instance()
     for system in systems:
         system_instance = "unknown"
-        if "_prod_" in system["name"]:
+        if "-prod-" in system["name"]:
             system_instance = "production"
-        elif "_dev_" in system["name"]:
+        elif "-dev-" in system["name"]:
             system_instance = "devel"
 
         if system_instance != copr_instance: