diff --git a/assets/blog/README.md b/assets/blog/README.md
deleted file mode 100644
index f5dad1fd9..000000000
--- a/assets/blog/README.md
+++ /dev/null
@@ -1,7 +0,0 @@
-## No images here
-
-Don't put images or other assets directly in this directory! Always make a new directory per-post, like those above, to store assets.
-
-The directory doesn't have to use the same slug as your post. Just pick something that doesn't exist yet, and use it.
-
-Thank you for doing your part in keeping a Clean Blog For All.
diff --git a/config/buildAssets.js b/config/buildAssets.js
index 05b5c8cfb..ed3ce20e7 100644
--- a/config/buildAssets.js
+++ b/config/buildAssets.js
@@ -45,6 +45,9 @@ async function createAssetPaths() {
           file.indexOf(publicDir) + publicDir.length,
         );
         const hashedAt = name.lastIndexOf('-');
+        if (hashedAt === -1) {
+          throw new Error(`hashedAt is -1, which is an error likely caused by a stray file (${file}) being pulled into the assets build path`)
+        }
         const originalName = name.slice(0, hashedAt);
         const key = `${originalName}${ext}`;
         return {