diff --git a/client/firewall/uspfilter/conntrack/tcp.go b/client/firewall/uspfilter/conntrack/tcp.go
index 0c0e7bd99..892ae6bcb 100644
--- a/client/firewall/uspfilter/conntrack/tcp.go
+++ b/client/firewall/uspfilter/conntrack/tcp.go
@@ -299,7 +299,7 @@ func (t *TCPTracker) updateState(key ConnKey, conn *TCPConnTrack, flags uint8, i
 		} else if flags&TCPRst != 0 {
 			conn.State = TCPStateClosed
 			conn.SetTombstone()
-			t.sendEvent(nftypes.TypeEnd, key, conn)
+			t.sendEvent(nftypes.TypeEnd, conn)
 		}
 
 	case TCPStateFinWait1:
@@ -313,7 +313,7 @@ func (t *TCPTracker) updateState(key ConnKey, conn *TCPConnTrack, flags uint8, i
 		case flags&TCPRst != 0:
 			conn.State = TCPStateClosed
 			conn.SetTombstone()
-			t.sendEvent(nftypes.TypeEnd, key, conn)
+			t.sendEvent(nftypes.TypeEnd, conn)
 		}
 
 	case TCPStateFinWait2:
diff --git a/client/firewall/uspfilter/tracer_test.go b/client/firewall/uspfilter/tracer_test.go
deleted file mode 100644
index e69de29bb..000000000