diff --git a/packages/angular_devkit/build_angular/src/builders/dev-server/vite-server.ts b/packages/angular_devkit/build_angular/src/builders/dev-server/vite-server.ts
index 58ed13cbb1..191cea2551 100644
--- a/packages/angular_devkit/build_angular/src/builders/dev-server/vite-server.ts
+++ b/packages/angular_devkit/build_angular/src/builders/dev-server/vite-server.ts
@@ -547,7 +547,7 @@ export async function setupServer(
             );
 
             // Set the sourcemap root to the workspace root. This is needed since we set a virtual path as root.
-            remappedMap.sourceRoot = serverOptions.workspaceRoot + '/';
+            remappedMap.sourceRoot = normalizePath(serverOptions.workspaceRoot) + '/';
 
             return {
               ...result,