diff --git a/demo/index.html b/demo/index.html
index a3da71d..4dc28ea 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -77,15 +77,10 @@ <h2>Try it</h2>
     </details>
   </main>
 
-  <!-- Only available if running locally -->
+  <!-- Hack to make it work on GitHub Pages where `dist/` isn't checked in; use the latest release's copy -->
+  <script src="https://cdn.jsdelivr.net/npm/oniguruma-to-es/dist/index.min.js"></script>
+  <!-- If running in development, replace with local copy -->
   <script src="../dist/index.min.js"></script>
-  <script>
-    // Hack to make it work on GitHub Pages, where `dist/` isn't checked in; use the last published
-    // release's copy
-    if (typeof OnigurumaToES === 'undefined') {
-      document.write('<script src="https://cdn.jsdelivr.net/npm/oniguruma-to-es/dist/index.min.js"><\/script>');
-    }
-  </script>
   <script src="./demo.js"></script>
   <script>
     // For testing in the console
diff --git a/spec/match-char-class-range.spec.js b/spec/match-char-class-range.spec.js
index 7e2b238..b836175 100644
--- a/spec/match-char-class-range.spec.js
+++ b/spec/match-char-class-range.spec.js
@@ -55,10 +55,6 @@ describe('CharacterClassRange', () => {
     expect('d').not.toFindMatch(r`[a-c-z]`);
   });
 
-  it('should throw for range with range', () => {
-    expect(() => compile(r`[a-0-9]`)).toThrow();
-  });
-
   it('should throw for range with set', () => {
     expect(() => compile(r`[a-\w]`)).toThrow();
     expect(() => compile(r`[\w-a]`)).toThrow();
@@ -70,5 +66,6 @@ describe('CharacterClassRange', () => {
   it('should throw for reversed ranges', () => {
     expect(() => compile(r`[z-a]`)).toThrow();
     expect(() => compile(r`[\u{1}-\0]`)).toThrow();
+    expect(() => compile(r`[a-0-9]`)).toThrow();
   });
 });