diff --git a/pkg/cmd/cli/backup/create.go b/pkg/cmd/cli/backup/create.go
index ae9dd2fec..5082eb239 100644
--- a/pkg/cmd/cli/backup/create.go
+++ b/pkg/cmd/cli/backup/create.go
@@ -242,11 +242,17 @@ func (o *CreateOptions) validateFromScheduleFlag(c *cobra.Command) error {
 	return nil
 }
 
+// validateBackupType check the backupType value and return the valid value.
 func (o *CreateOptions) validateBackupType() error {
-	backupType := strings.TrimSpace(o.BackupType)
+	// Allow full, and incremental from the CLI, and ignore case of the input string's case.
+	backupType := strings.ToLower(strings.TrimSpace(o.BackupType))
 
 	switch backupType {
-	case "", "Incremental", "Full":
+	case "":
+	case "incremental":
+		o.BackupType = string(velerov1api.BackupTypeIncremental)
+	case "full":
+		o.BackupType = string(velerov1api.BackupTypeFull)
 	default:
 		return fmt.Errorf("invalid backup type %s - valid values are 'Incremental', and 'Full'", backupType)
 	}
diff --git a/pkg/cmd/cli/backup/create_test.go b/pkg/cmd/cli/backup/create_test.go
index 718ab0e96..46885b7c9 100644
--- a/pkg/cmd/cli/backup/create_test.go
+++ b/pkg/cmd/cli/backup/create_test.go
@@ -129,30 +129,34 @@ func TestCreateOptions_ValidateBackupType(t *testing.T) {
 		o.BackupType = ""
 		err := o.validateBackupType()
 		require.NoError(t, err)
+		require.Empty(t, o.BackupType)
 
 		o.BackupType = "Incremental"
 		err = o.validateBackupType()
 		require.NoError(t, err)
+		require.EqualValues(t, velerov1api.BackupTypeIncremental, o.BackupType)
 
 		o.BackupType = "Full"
 		err = o.validateBackupType()
 		require.NoError(t, err)
+		require.EqualValues(t, velerov1api.BackupTypeFull, o.BackupType)
 
 		o.BackupType = " Incremental "
 		err = o.validateBackupType()
 		require.NoError(t, err)
+		require.EqualValues(t, velerov1api.BackupTypeIncremental, o.BackupType)
+
+		o.BackupType = "iNcReMeNtAl"
+		err = o.validateBackupType()
+		require.NoError(t, err)
+		require.EqualValues(t, velerov1api.BackupTypeIncremental, o.BackupType)
 	})
 
 	t.Run("invalid backup type", func(t *testing.T) {
 		o := NewCreateOptions()
 
-		o.BackupType = "incremental"
-		err := o.validateBackupType()
-		require.Error(t, err)
-		require.Equal(t, "invalid backup type incremental - valid values are 'Incremental', and 'Full'", err.Error())
-
 		o.BackupType = "invalid"
-		err = o.validateBackupType()
+		err := o.validateBackupType()
 		require.Error(t, err)
 		require.Equal(t, "invalid backup type invalid - valid values are 'Incremental', and 'Full'", err.Error())
 	})