diff --git a/command.go b/command.go
index 1e41557..eb311a7 100644
--- a/command.go
+++ b/command.go
@@ -827,7 +827,7 @@ func (c *Command) validateRequiredFlags() error {
 	})
 
 	if len(missingFlagNames) > 0 {
-		return fmt.Errorf(`Required flag(s) "%s" have/has not been set`, strings.Join(missingFlagNames, `", "`))
+		return fmt.Errorf(`required flag(s) "%s" not set`, strings.Join(missingFlagNames, `", "`))
 	}
 	return nil
 }
diff --git a/command_test.go b/command_test.go
index edffc15..dc8f2af 100644
--- a/command_test.go
+++ b/command_test.go
@@ -681,7 +681,7 @@ func TestRequiredFlags(t *testing.T) {
 	c.MarkFlagRequired("foo2")
 	c.Flags().String("bar", "", "")
 
-	expected := fmt.Sprintf("Required flag(s) %q, %q have/has not been set", "foo1", "foo2")
+	expected := fmt.Sprintf("required flag(s) %q, %q not set", "foo1", "foo2")
 
 	_, err := executeCommand(c)
 	got := err.Error()
@@ -708,7 +708,7 @@ func TestPersistentRequiredFlags(t *testing.T) {
 
 	parent.AddCommand(child)
 
-	expected := fmt.Sprintf("Required flag(s) %q, %q, %q, %q have/has not been set", "bar1", "bar2", "foo1", "foo2")
+	expected := fmt.Sprintf("required flag(s) %q, %q, %q, %q not set", "bar1", "bar2", "foo1", "foo2")
 
 	_, err := executeCommand(parent, "child")
 	if err.Error() != expected {