diff --git a/.changeset/sixty-olives-lie.md b/.changeset/sixty-olives-lie.md
new file mode 100644
index 0000000..537a874
--- /dev/null
+++ b/.changeset/sixty-olives-lie.md
@@ -0,0 +1,5 @@
+---
+"vite-plugin-eslint4b": patch
+---
+
+fix: to correctly normalize ESLint module paths
diff --git a/src/vite-plugin-eslint4b.ts b/src/vite-plugin-eslint4b.ts
index 326fce9..1bd9373 100644
--- a/src/vite-plugin-eslint4b.ts
+++ b/src/vite-plugin-eslint4b.ts
@@ -297,7 +297,12 @@ function transform(
 
   injectSources.forEach((s) => {
     if (path.isAbsolute(s.module)) {
-      s.module = `./${path.normalize(path.relative(process.cwd(), s.module))}`;
+      const normalized = path.normalize(path.relative(process.cwd(), s.module));
+      s.module =
+        normalized.startsWith("./") || normalized.startsWith("../")
+          ? normalized
+          : // This must be a relative path to match the esbuild import path.
+            `./${normalized}`;
     }
   });