diff --git a/app/assets/stylesheets/protocols/preview_modal.scss b/app/assets/stylesheets/protocols/preview_modal.scss
index 424cebbf2..41052eb10 100644
--- a/app/assets/stylesheets/protocols/preview_modal.scss
+++ b/app/assets/stylesheets/protocols/preview_modal.scss
@@ -54,6 +54,14 @@
             margin-bottom: 0;
             white-space: nowrap;
           }
+
+          .dropdown-selector-container {
+            width: 170px;
+
+            .search-field {
+              padding-left: 8px;
+            }
+          }
         }
       }