diff --git a/interface/web/sites/templates/aps_install_package.htm b/interface/web/sites/templates/aps_install_package.htm
index 2c4b48b9d38d2a243baa8e1b39367a699f5e8b13..255a8685d5a76467c202521c7040a145b43db955 100644
--- a/interface/web/sites/templates/aps_install_package.htm
+++ b/interface/web/sites/templates/aps_install_package.htm
@@ -57,7 +57,7 @@
 		<input type="hidden" name="install" value="0" />
 		<div class="clear">
 			<div class="right">
-				<button class="btn btn-default formbutton-success" type="button" value="{tmpl_var name='btn_install_txt'}" name="btn_install" onclick="document.pageForm.install.value=1; ISPConfig.submitForm('pageForm','sites/aps_install_package.php?id={tmpl_var name='pkg_id'}');">{tmpl_var name='btn_install_txt'}</button>
+				<button class="btn btn-default formbutton-success positive" type="button" value="{tmpl_var name='btn_install_txt'}" name="btn_install" onclick="document.pageForm.install.value=1; ISPConfig.submitForm('pageForm','sites/aps_install_package.php?id={tmpl_var name='pkg_id'}');">{tmpl_var name='btn_install_txt'}</button>
 				<button class="btn btn-default formbutton-default" type="button" value="{tmpl_var name='btn_cancel_txt'}" data-load-content="sites/aps_availablepackages_list.php">{tmpl_var name='btn_cancel_txt'}</button>
 			</div>
 		</div>