diff --git a/src/plugins/dev.ts b/src/plugins/dev.ts
index 7d532430..bbd6864d 100644
--- a/src/plugins/dev.ts
+++ b/src/plugins/dev.ts
@@ -155,9 +155,11 @@ export function DevPlugin(ctx: PWAPluginContext): Plugin {
           }
           return await fs.readFile(swDest, 'utf-8')
         }
+        
+        const key = normalizePath(`${options.base}${id.startsWith('/') ? id.slice(1) : id}`)
 
-        if (swDevOptions.workboxPaths.has(id))
-          return await fs.readFile(swDevOptions.workboxPaths.get(id)!, 'utf-8')
+        if (swDevOptions.workboxPaths.has(key))
+          return await fs.readFile(swDevOptions.workboxPaths.get(key)!, 'utf-8')
       }
     },
   }