diff --git a/data/interfaces/bookstrap/config.html b/data/interfaces/bookstrap/config.html
index 9051ad49..dcb1f925 100644
--- a/data/interfaces/bookstrap/config.html
+++ b/data/interfaces/bookstrap/config.html
@@ -682,7 +682,7 @@
                   <label class="control-label">Deutsche Nationalbibliothek API:</label>
                   <div class="checkbox">
                     <% checked = 'checked="checked"' if CONFIG['DNB_API'] else '' %>
-                    <label for="ol_api">
+                    <label for="dnb_api">
                       <input type="checkbox" id="dnb_api" name="dnb_api" value="1" ${checked} />
                       Enable Deutsche Nationalbibliothek api for book information
                     </label>