diff --git a/group_wait_test.go b/group_wait_test.go
new file mode 100644
index 0000000..68c32f8
--- /dev/null
+++ b/group_wait_test.go
@@ -0,0 +1,33 @@
+package multierror
+
+import (
+	"testing"
+)
+
+func waitNotNil() error {
+	g := new(Group)
+	g.Go(func() error { return nil })
+	return g.Wait()
+}
+
+func waitNil() error {
+	g := new(Group)
+	g.Go(func() error { return nil })
+	if err := g.Wait(); err != nil {
+		return err
+	}
+	return nil
+}
+
+// This test will fail with the current implementation of Group.Wait
+func TestWait_NilNotNil(t *testing.T) {
+	err1 := waitNotNil()
+	if err1 != nil {
+		t.Fatalf("err1 should be nil; actual %v", err1)
+	}
+
+	err2 := waitNil()
+	if err2 != nil {
+		t.Fatalf("err2 should be nil; actual %v", err2)
+	}
+}