diff --git a/lib/configure.js b/lib/configure.js
index 5f078a1..f14119e 100644
--- a/lib/configure.js
+++ b/lib/configure.js
@@ -112,8 +112,8 @@ class Configure {
     if (this.shopify) {
       this.publicPath = this.defaults.publicPath
     } else {
-      const uri = this.webpack.output.path.split('/wp-content/')[1]
-      this.publicPath = `/wp-content/${uri}`
+      const uri = this.webpack.output.path.split(`${path.sep}wp-content${path.sep}`)[1]
+      this.publicPath = `/wp-content/${uri}`.replace(/\\/g, '/');
     }
   }