diff --git a/path_manager.go b/path_manager.go
index 9e2c4a41b..34096654b 100644
--- a/path_manager.go
+++ b/path_manager.go
@@ -179,8 +179,10 @@ var _ ackhandler.FrameHandler = &pathManagerAckHandler{}
 func (pm *pathManagerAckHandler) OnAcked(f wire.Frame) {}
 
 func (pm *pathManagerAckHandler) OnLost(f wire.Frame) {
-	// TODO: retransmit the packet the first time it is lost
-	pc := f.(*wire.PathChallengeFrame)
+	pc, ok := f.(*wire.PathChallengeFrame)
+	if !ok {
+		return
+	}
 	for i, path := range pm.paths {
 		if path.pathChallenge == pc.Data {
 			pm.paths = slices.Delete(pm.paths, i, i+1)
diff --git a/path_manager_test.go b/path_manager_test.go
index 6be3551b2..6109318a7 100644
--- a/path_manager_test.go
+++ b/path_manager_test.go
@@ -68,7 +68,9 @@ func TestPathManagerIntentionalMigration(t *testing.T) {
 	require.False(t, shouldSwitch)
 
 	// acknowledging the PATH_CHALLENGE doesn't confirm the path
-	frames[0].Handler.OnAcked(frames[0].Frame)
+	for _, f := range frames {
+		f.Handler.OnAcked(f.Frame)
+	}
 	connID, frames, shouldSwitch = pm.HandlePacket(
 		&net.UDPAddr{IP: net.IPv4(1, 2, 3, 4), Port: 1000},
 		now,
@@ -155,7 +157,7 @@ func TestPathManagerMultipleProbes(t *testing.T) {
 	require.Equal(t, &wire.PathResponseFrame{Data: [8]byte{1, 2, 3, 4, 5, 6, 7, 8}}, frames[0].Frame)
 	require.False(t, shouldSwitch)
 
-	// now receive an other packet on the same path with a PATH_RESPONSE
+	// now receive another packet on the same path with a PATH_RESPONSE
 	connID, frames, shouldSwitch = pm.HandlePacket(
 		&net.UDPAddr{IP: net.IPv4(1, 2, 3, 4), Port: 1000},
 		now,
@@ -166,6 +168,9 @@ func TestPathManagerMultipleProbes(t *testing.T) {
 	require.Len(t, frames, 1)
 	require.Equal(t, &wire.PathResponseFrame{Data: [8]byte{8, 7, 6, 5, 4, 3, 2, 1}}, frames[0].Frame)
 	require.False(t, shouldSwitch)
+
+	// lose the response packet
+	frames[0].Handler.OnLost(frames[0].Frame)
 }
 
 // The first packet received on the new path is already a non-probing packet.