diff --git a/09_palindromes/solution/palindromes-solution.js b/09_palindromes/solution/palindromes-solution.js
index bc5ef94..7950015 100644
--- a/09_palindromes/solution/palindromes-solution.js
+++ b/09_palindromes/solution/palindromes-solution.js
@@ -1,5 +1,5 @@
 const palindromes = function (string) {
-  const processedString = string.toLowerCase().replace(/[^a-z]/g, "");
+  const processedString = string.toLowerCase().replace(/[^a-z0-9]/g, "");
   return processedString.split("").reverse().join("") == processedString;
 };
 
diff --git a/09_palindromes/solution/palindromes-solution.spec.js b/09_palindromes/solution/palindromes-solution.spec.js
index e8d7e6a..6e31d91 100644
--- a/09_palindromes/solution/palindromes-solution.spec.js
+++ b/09_palindromes/solution/palindromes-solution.spec.js
@@ -24,4 +24,7 @@ describe('palindromes', () => {
   test('works with numbers in a string', () => {
     expect(palindromes('rac3e3car')).toBe(true);
   });
+  test('works with unevenly spaced numbers in a string', () => {
+    expect(palindromes('r3ace3car')).toBe(false);
+  });
 });