diff --git a/input/static/js/project-categories.js b/input/static/js/project-categories.js
index 5ea6e3b..9b0f573 100644
--- a/input/static/js/project-categories.js
+++ b/input/static/js/project-categories.js
@@ -14,6 +14,7 @@
                 otherInput.prop('disabled', !checked);
                 otherInput.prop('required', checked);
                 otherLabel.toggleClass('required', checked);
+                otherLabel.css('opacity', checked ? 1 : 0.3);
                 otherTableRow.css('visibility', checked ? 'visible' : 'collapse');
 
                 if (checked) {