diff --git a/.changeset/afraid-laws-study.md b/.changeset/afraid-laws-study.md
new file mode 100644
index 0000000000..2a8bda3628
--- /dev/null
+++ b/.changeset/afraid-laws-study.md
@@ -0,0 +1,7 @@
+---
+"@marko/compiler": patch
+"marko": patch
+"@marko/runtime-tags": patch
+---
+
+Improve registry id normalization.
diff --git a/packages/compiler/src/babel-utils/tags.js b/packages/compiler/src/babel-utils/tags.js
index 51d0085c82..2503f6b32a 100644
--- a/packages/compiler/src/babel-utils/tags.js
+++ b/packages/compiler/src/babel-utils/tags.js
@@ -319,7 +319,7 @@ function resolveMarkoFile(file, filename) {
 const idCache = new WeakMap();
 const templateIdHashOpts = { outputLength: 5 };
 export function getTemplateId(opts, request, child) {
-  const id = relative(ROOT, request);
+  const id = relative(ROOT, request).replace(/[^a-zA-Z0-9_$./-]/g, "/");
   const optimize = typeof opts === "object" ? opts.optimize : opts;
 
   if (optimize) {