diff --git a/js/bug-visibility.js b/js/bug-visibility.js
index ea6025185..e6e6b9b6f 100644
--- a/js/bug-visibility.js
+++ b/js/bug-visibility.js
@@ -134,6 +134,10 @@ function setFieldValue(f, v)
 function handleControlledField(controlled_id, is_initial_editform)
 {
     var m = field_metadata[controlled_id];
+    if (!m)
+    {
+        return;
+    }
     var controlled = document.getElementById(controlled_id);
     var vis;
     // Show/hide the field
diff --git a/js/field.js b/js/field.js
index 436c5823c..51bf9054f 100644
--- a/js/field.js
+++ b/js/field.js
@@ -255,7 +255,7 @@ function setDefaultCheckbox(e, field_id)
     if (el && elLabel)
     {
         el.checked = "true";
-        elLabel.style.fontWeight = bold;
+        elLabel.style.fontWeight = 'bold';
     }
 }