diff --git a/sat_frontends/jp/cmd_pubsub.py b/sat_frontends/jp/cmd_pubsub.py
index 4c3f1126..9f283827 100644
--- a/sat_frontends/jp/cmd_pubsub.py
+++ b/sat_frontends/jp/cmd_pubsub.py
@@ -890,7 +890,7 @@ class CachePurge(base.CommandBase):
             help="purge items flagged with TYPE. May be used several times."
         )
         self.parser.add_argument(
-            "-s", "--subtype", action="append", dest="subtypes",
+            "-S", "--subtype", action="append", dest="subtypes",
             help="purge items flagged with SUBTYPE. May be used several times."
         )
         self.parser.add_argument(