@@ -235,7 +235,7 @@ func parseLabel(req parseRequest) (*LabelCommand, error) {

 func parseAdd(req parseRequest) (*AddCommand, error) {

 	if len(req.args) < 2 {

-		return nil, errAtLeastTwoArguments("ADD")

+		return nil, errNoDestinationArgument("ADD")

 	}

 	flChown := req.flags.AddString("chown", "")

 	if err := req.flags.Parse(); err != nil {

@@ -250,7 +250,7 @@ func parseAdd(req parseRequest) (*AddCommand, error) {

 func parseCopy(req parseRequest) (*CopyCommand, error) {

 	if len(req.args) < 2 {

-		return nil, errAtLeastTwoArguments("COPY")

+		return nil, errNoDestinationArgument("COPY")

 	}

 	flChown := req.flags.AddString("chown", "")

 	flFrom := req.flags.AddString("from", "")

@@ -622,8 +622,8 @@ func errExactlyOneArgument(command string) error {

 	return errors.Errorf("%s requires exactly one argument", command)

 }

-func errAtLeastTwoArguments(command string) error {

-	return errors.Errorf("%s requires at least two arguments", command)

+func errNoDestinationArgument(command string) error {

+	return errors.Errorf("%s requires at least two arguments, but only one was provided. Destination could not be determined.", command)

 }

 func errBlankCommandNames(command string) error {

@@ -45,7 +45,7 @@ func TestCommandsAtLeastOneArgument(t *testing.T) {

 	}

 }

-func TestCommandsAtLeastTwoArgument(t *testing.T) {

+func TestCommandsNoDestinationArgument(t *testing.T) {

 	commands := []string{

 		"ADD",

 		"COPY",

@@ -55,7 +55,7 @@ func TestCommandsAtLeastTwoArgument(t *testing.T) {

 		ast, err := parser.Parse(strings.NewReader(command + " arg1"))

 		require.NoError(t, err)

 		_, err = ParseInstruction(ast.AST.Children[0])

-		assert.EqualError(t, err, errAtLeastTwoArguments(command).Error())

+		assert.EqualError(t, err, errNoDestinationArgument(command).Error())

 	}

 }