diff --git a/src/plugins.ts b/src/plugins.ts
index 7fe80e5d..98778de0 100644
--- a/src/plugins.ts
+++ b/src/plugins.ts
@@ -58,9 +58,9 @@ export default class Plugins {
   }
 
   friendlyName(name: string): string {
-    const {scope} = this.config.pjson.oclif
+    const {pluginPrefix, scope} = this.config.pjson.oclif
     if (!scope) return name
-    const match = name.match(`@${scope}/plugin-(.+)`)
+    const match = name.match(`@${scope}/${pluginPrefix ?? 'plugin'}-(.+)`)
     if (!match) return name
     return match[1]
   }
@@ -256,9 +256,9 @@ export default class Plugins {
 
   unfriendlyName(name: string): string | undefined {
     if (name.includes('@')) return
-    const {scope} = this.config.pjson.oclif
+    const {pluginPrefix, scope} = this.config.pjson.oclif
     if (!scope) return
-    return `@${scope}/plugin-${name}`
+    return `@${scope}/${pluginPrefix ?? 'plugin'}-${name}`
   }
 
   async uninstall(name: string): Promise<void> {
diff --git a/test/plugins.test.ts b/test/plugins.test.ts
index 587203b2..c329db2c 100644
--- a/test/plugins.test.ts
+++ b/test/plugins.test.ts
@@ -35,6 +35,10 @@ describe('Plugins', () => {
   beforeEach(async () => {
     sandbox = createSandbox()
     config = await Config.load(process.cwd())
+    config.pjson.oclif = {
+      ...config.pjson.oclif,
+      pluginPrefix: undefined,
+    }
     plugins = new Plugins(config)
     // @ts-expect-error because savePJSON is private
     saveStub = sandbox.stub(plugins, 'savePJSON').resolves()
@@ -85,6 +89,11 @@ describe('Plugins', () => {
       sandbox.stub(config.pjson.oclif, 'scope').value(null)
       expect(plugins.friendlyName(linkedPlugin.name)).to.equal('@oclif/plugin-linked')
     })
+
+    it('should return friendly name for plugin when pluginPrefix is defined', () => {
+      sandbox.stub(config.pjson.oclif, 'pluginPrefix').value('foo')
+      expect(plugins.friendlyName('@oclif/foo-bar')).to.equal('bar')
+    })
   })
 
   describe('unfriendlyName', () => {
@@ -100,6 +109,11 @@ describe('Plugins', () => {
       sandbox.stub(config.pjson.oclif, 'scope').value(null)
       expect(plugins.unfriendlyName(linkedPlugin.name)).to.be.undefined
     })
+
+    it('should return full name when pluginPrefix is defined', () => {
+      sandbox.stub(config.pjson.oclif, 'pluginPrefix').value('foo')
+      expect(plugins.unfriendlyName('bar')).to.equal('@oclif/foo-bar')
+    })
   })
 
   describe('maybeUnfriendlyName', () => {