diff --git a/.gitignore b/.gitignore
index f7a6777..e89d36d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@ tabs/
 css/
 static/
 *.orig
+*.bak
diff --git a/src/HierarchicalNamedLayoutStrategy.ts b/src/HierarchicalNamedLayoutStrategy.ts
index f3d4533..1fd37ac 100644
--- a/src/HierarchicalNamedLayoutStrategy.ts
+++ b/src/HierarchicalNamedLayoutStrategy.ts
@@ -16,7 +16,7 @@ export class HierarchicalNamedLayoutStrategy extends LayoutStrategy {
     const path = context + "/" + sanitize(levelLabel).replaceAll(" ", "-");
 
     const newPath = dirRoot + "/" + path;
-    fs.mkdirSync(newPath, { recursive: true });
+    fs.mkdirSync(newPath.toLowerCase(), { recursive: true });
     this.addCategoryMetadata(newPath, order, levelLabel);
     return path;
   }
diff --git a/src/images.ts b/src/images.ts
index 2514390..15b1230 100644
--- a/src/images.ts
+++ b/src/images.ts
@@ -195,8 +195,8 @@ function writeImageIfNew(path: string, buffer: Buffer) {
   if (fs.pathExistsSync(path)) {
     verbose("Replacing image " + path);
   } else {
-    verbose("Adding image " + path);
-    fs.mkdirsSync(Path.dirname(path));
+    verbose("Adding image " + path.toLowerCase());
+    fs.mkdirsSync(Path.dirname(path.toLowerCase()));
   }
   fs.createWriteStream(path).write(buffer); // async but we're not waiting
 }
diff --git a/src/pull.ts b/src/pull.ts
index f0866d1..aa7d915 100644
--- a/src/pull.ts
+++ b/src/pull.ts
@@ -301,9 +301,9 @@ async function getTabsPagesRecursively(
 }
 
 function writePage(page: NotionPage, finalMarkdown: string) {
-  const mdPath = layoutStrategy.getPathForPage(page, ".mdx");
+  const mdPath = layoutStrategy.getPathForPage(page, ".mdx").toLowerCase();
   verbose(`writing ${mdPath}`);
-  fs.writeFileSync(mdPath.toLowerCase(), finalMarkdown, {});
+  fs.writeFileSync(mdPath, finalMarkdown, {});
   ++counts.output_normally;
 }