diff --git a/include/osmo-pcap/common.h b/include/osmo-pcap/common.h
index 79080a2..7ac5bb0 100644
--- a/include/osmo-pcap/common.h
+++ b/include/osmo-pcap/common.h
@@ -32,10 +32,10 @@
 
 /* support old versions of libosmocore */
 #ifndef OSMO_VTY_PORT_PCAP_CLIENT
-#define OSMO_VTY_PORT_PCAP_CLIENT	4237
+#define OSMO_VTY_PORT_PCAP_CLIENT	4227
 #endif
 #ifndef OSMO_VTY_PORT_PCAP_SERVER
-#define OSMO_VTY_PORT_PCAP_SERVER	4238
+#define OSMO_VTY_PORT_PCAP_SERVER	4228
 #endif
 
 enum {
diff --git a/osmoappdesc.py b/osmoappdesc.py
index 331e6a9..36fef63 100644
--- a/osmoappdesc.py
+++ b/osmoappdesc.py
@@ -22,8 +22,8 @@ app_configs = {
 }
 
 apps = [
-    (4238, "src/osmo-pcap-server", "OsmoPCAPServer", "osmo-pcap-server"),
-    (4237, "src/osmo-pcap-client", "OsmoPCAPClient", "osmo-pcap-client"),
+    (4228, "src/osmo-pcap-server", "OsmoPCAPServer", "osmo-pcap-server"),
+    (4227, "src/osmo-pcap-client", "OsmoPCAPClient", "osmo-pcap-client"),
         ]
 
 vty_command = ["src/osmo-pcap-server", "-c", "doc/examples/osmo-pcap-server/osmo-pcap-server.cfg"]