diff --git a/errgroup/errgroup.go b/errgroup/errgroup.go
index 4c0850a..cbee7a4 100644
--- a/errgroup/errgroup.go
+++ b/errgroup/errgroup.go
@@ -61,8 +61,8 @@ func (g *Group) Wait() error {
 // It blocks until the new goroutine can be added without the number of
 // active goroutines in the group exceeding the configured limit.
 //
-// The first call to return a non-nil error cancels the group; its error will be
-// returned by Wait.
+// The first call to return a non-nil error cancels the group's context, if the
+// group was created by calling WithContext. The error will be returned by Wait.
 func (g *Group) Go(f func() error) {
 	if g.sem != nil {
 		g.sem <- token{}