diff --git a/koha-tmpl/intranet-tmpl/npl/en/parameters/marctagstructure.tmpl b/koha-tmpl/intranet-tmpl/npl/en/parameters/marctagstructure.tmpl
index a8b325dea2..fe1e60126e 100644
--- a/koha-tmpl/intranet-tmpl/npl/en/parameters/marctagstructure.tmpl
+++ b/koha-tmpl/intranet-tmpl/npl/en/parameters/marctagstructure.tmpl
@@ -111,7 +111,7 @@
 			<option value="<!-- TMPL_VAR NAME="value" -->"><!-- TMPL_VAR NAME="frameworktext" --></option>
 		<!-- /TMPL_LOOP -->
 		</select>
-		<input type="submit" value="OK" class="button">
+		<input type="submit" value="OK" class="submit">
 	</form>
 <!-- /TMPL_IF -->