diff --git a/deno_dist/file-utils.ts b/deno_dist/file-utils.ts
index d044bed..2059a1c 100644
--- a/deno_dist/file-utils.ts
+++ b/deno_dist/file-utils.ts
@@ -67,7 +67,7 @@ function getPath(path: string, options: EtaConfig) {
   // We can cache the result to avoid expensive
   // file operations.
   var pathOptions = JSON.stringify({
-    filename: options.filename,
+    filename: options.filename, // filename of the template which called includeFile()
     path: path,
     root: options.root,
     views: options.views,
diff --git a/src/file-utils.ts b/src/file-utils.ts
index 44f9d80..87c4466 100644
--- a/src/file-utils.ts
+++ b/src/file-utils.ts
@@ -63,7 +63,7 @@ function getPath(path: string, options: EtaConfig) {
   // We can cache the result to avoid expensive
   // file operations.
   var pathOptions = JSON.stringify({
-    filename: options.filename,
+    filename: options.filename, // filename of the template which called includeFile()
     path: path,
     root: options.root,
     views: options.views