diff --git a/index.html b/index.html
index 5186be3..4006c4d 100644
--- a/index.html
+++ b/index.html
@@ -87,7 +87,7 @@
         filterBaseString(baseString) {
             // Regex from https://stackoverflow.com/a/3561711/
             const regexSafeAlphabet = this.alphabet.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
-            return baseString.replace(new RegExp(`[^${regexSafeAlphabet}]`), "");
+            return baseString.replace(new RegExp(`[^${regexSafeAlphabet}]`, "g"), "");
         }
     }