diff --git a/cobra_test.go b/cobra_test.go
index 48d13d3..d6593a5 100644
--- a/cobra_test.go
+++ b/cobra_test.go
@@ -1147,6 +1147,14 @@ func TestGlobalNormFuncPropagation(t *testing.T) {
 	}
 }
 
+func TestFlagOnPflagCommandLine(t *testing.T) {
+	flagName := "flagOnCommandLine"
+	pflag.CommandLine.String(flagName, "", "about my flag")
+	r := fullSetupTest("--help")
+
+	checkResultContains(t, r, flagName)
+}
+
 func TestAddTemplateFunctions(t *testing.T) {
 	AddTemplateFunc("t", func() bool { return true })
 	AddTemplateFuncs(template.FuncMap{
diff --git a/command.go b/command.go
index 52231c3..f912736 100644
--- a/command.go
+++ b/command.go
@@ -1258,6 +1258,8 @@ func (c *Command) updateParentsPflags() (added []*flag.Flag) {
 		c.parentsPflags.SortFlags = false
 	}
 
+	c.Root().PersistentFlags().AddFlagSet(flag.CommandLine)
+
 	c.VisitParents(func(x *Command) {
 		if x.HasPersistentFlags() {
 			x.PersistentFlags().VisitAll(func(f *flag.Flag) {