diff --git a/internal/ui/login/static/resources/scripts/input_suffix_offset.js b/internal/ui/login/static/resources/scripts/input_suffix_offset.js
index ab8556b55..fa706378e 100644
--- a/internal/ui/login/static/resources/scripts/input_suffix_offset.js
+++ b/internal/ui/login/static/resources/scripts/input_suffix_offset.js
@@ -1,8 +1,10 @@
 const suffix = document.getElementById('default-login-suffix');
 const suffixInput = document.getElementsByClassName('lgn-suffix-input')[0];
 
-calculateOffset();
-suffix.addEventListener("DOMCharacterDataModified", calculateOffset);
+if (suffix && suffixInput) {
+    calculateOffset();
+    suffix.addEventListener("DOMCharacterDataModified", calculateOffset);
+}
 
 function calculateOffset() {
     // add suffix width to inner right padding of the input field