diff --git a/README.md b/README.md
index 1ee65ec..0579756 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # CMDR
-[![test](https://github.com/MrLYC/cmdr/actions/workflows/unittest.yml/badge.svg)](https://github.com/MrLYC/cmdr/actions/workflows/unittest.yml) [![codecov](https://codecov.io/gh/MrLYC/cmdr/branch/master/graph/badge.svg?token=mo4TJP4mQt)](https://codecov.io/gh/MrLYC/cmdr) ![Go version](https://img.shields.io/github/go-mod/go-version/mrlyc/cmdr) ![release](https://img.shields.io/github/v/release/mrlyc/cmdr?label=version)
+[![test](https://github.com/MrLYC/cmdr/actions/workflows/test.yml/badge.svg)](https://github.com/MrLYC/cmdr/actions/workflows/test.yml) [![codecov](https://codecov.io/gh/MrLYC/cmdr/branch/master/graph/badge.svg?token=mo4TJP4mQt)](https://codecov.io/gh/MrLYC/cmdr) ![Go version](https://img.shields.io/github/go-mod/go-version/mrlyc/cmdr) ![release](https://img.shields.io/github/v/release/mrlyc/cmdr?label=version)
 
 CMDR is a simple command version management tool that helps you quickly switch from multiple command versions.
 
diff --git a/core/initializer/command.go b/core/initializer/command.go
index 96db007..634c661 100644
--- a/core/initializer/command.go
+++ b/core/initializer/command.go
@@ -34,20 +34,6 @@ func (c *CmdrUpdater) getActivatedCmdrVersion() string {
 	return command.GetVersion()
 }
 
-func (c *CmdrUpdater) install() error {
-	_, err := c.manager.Define(c.name, c.version, c.location)
-	if err != nil {
-		return errors.Wrapf(err, "failed to define command %s", c.name)
-	}
-
-	err = c.manager.Activate(c.name, c.version)
-	if err != nil {
-		return errors.Wrapf(err, "failed to activate command %s", c.name)
-	}
-
-	return nil
-}
-
 func (c *CmdrUpdater) removeLegacies(safeVersions []string) error {
 	logger := core.GetLogger()
 
@@ -69,6 +55,7 @@ func (c *CmdrUpdater) removeLegacies(safeVersions []string) error {
 		logger.Debug("checking legacy command", map[string]interface{}{
 			"command": command,
 		})
+
 		if command.GetActivated() {
 			continue
 		}
@@ -112,12 +99,17 @@ func (c *CmdrUpdater) Init(isUpgrade bool) error {
 	})
 
 	if !isUpgrade {
-		err := c.install()
+		_, err := c.manager.Define(c.name, c.version, c.location)
 		if err != nil {
-			return errors.WithMessagef(err, "failed to install command %s", c.name)
+			return errors.Wrapf(err, "failed to define command %s", c.name)
 		}
 	}
 
+	err := c.manager.Activate(c.name, c.version)
+	if err != nil {
+		return errors.Wrapf(err, "failed to activate command %s", c.name)
+	}
+
 	return c.removeLegacies(safeVersion)
 }
 
diff --git a/core/initializer/command_test.go b/core/initializer/command_test.go
index b44133e..e53cc4f 100644
--- a/core/initializer/command_test.go
+++ b/core/initializer/command_test.go
@@ -62,4 +62,10 @@ var _ = Describe("Command", func() {
 		Expect(updater.Init(false)).To(Succeed())
 	})
 
+	It("should upgrade cmdr", func() {
+		manager.EXPECT().Activate(name, version)
+		manager.EXPECT().Undefine(name, legacyCommand.GetVersion())
+
+		Expect(updater.Init(true)).To(Succeed())
+	})
 })