diff --git a/client/internal/routeselector/routeselector.go b/client/internal/routeselector/routeselector.go
index bfcf71552..8a64ad316 100644
--- a/client/internal/routeselector/routeselector.go
+++ b/client/internal/routeselector/routeselector.go
@@ -32,10 +32,9 @@ func (rs *RouteSelector) SelectRoutes(routes []route.NetID, appendRoute bool, al
 	rs.mu.Lock()
 	defer rs.mu.Unlock()
 
-	// Validate before mutating: a non-append selection wipes the current selection first, so
-	// a request naming only unavailable routes would deselect everything the user had and put
-	// nothing in its place. Requesting no routes at all is a different thing - that's the
-	// caller asking to deselect all - and still goes through.
+	// Validate before mutating: a non-append selection wipes the current selection
+	// first, so a request of only unavailable routes would deselect everything and
+	// put nothing back. An empty request means deselect all, so it still goes through.
 	var err *multierror.Error
 	available := make([]route.NetID, 0, len(routes))
 	for _, r := range routes {
diff --git a/client/internal/routeselector/routeselector_test.go b/client/internal/routeselector/routeselector_test.go
index 3181d90d0..476542f20 100644
--- a/client/internal/routeselector/routeselector_test.go
+++ b/client/internal/routeselector/routeselector_test.go
@@ -888,12 +888,9 @@ func TestRouteSelector_EnableExitNodeKeepsOtherRoutes(t *testing.T) {
 	assert.True(t, rs.IsSelected("lan2"), "non-exit route must stay selected")
 }
 
-// TestRouteSelector_SelectRoutes_AllUnavailableKeepsSelection covers the destructive case: a
-// non-append selection clears the current selection before applying the requested one, so a
-// request naming only unavailable routes used to leave everything deselected while still
-// returning an error - a typo in a route ID silently dropped the user's exit node. A request
-// with at least one available route keeps applying the valid part (see "Select non-existing
-// route" above); this is only about the all-invalid case.
+// A non-append selection clears the current selection before applying the requested
+// one, so an all-unavailable request used to leave nothing selected while returning
+// an error. Requests with at least one available route are unaffected.
 func TestRouteSelector_SelectRoutes_AllUnavailableKeepsSelection(t *testing.T) {
 	allRoutes := []route.NetID{"route1", "route2", "route3"}
 
@@ -909,9 +906,8 @@ func TestRouteSelector_SelectRoutes_AllUnavailableKeepsSelection(t *testing.T) {
 	}
 }
 
-// TestRouteSelector_SelectRoutes_EmptyRequestStillDeselectsAll guards the boundary of the check
-// above: asking for no routes is the caller deselecting everything, not a failed request, so it
-// must keep working.
+// Boundary of the check above: an empty request is the caller deselecting everything,
+// not a failed lookup, so it must keep working.
 func TestRouteSelector_SelectRoutes_EmptyRequestStillDeselectsAll(t *testing.T) {
 	allRoutes := []route.NetID{"route1", "route2", "route3"}