diff --git ui/rules.seven.css ui/rules.seven.css
new file mode 100644
index 0000000..2c18262
--- /dev/null
+++ ui/rules.seven.css
@@ -0,0 +1,87 @@
+/**
+ * JQuery UI style sheet fix for seven.
+ */
+
+.ui-button {
+  border: 1px solid #cccccc;
+  background: #e6e6e6;
+}
+
+.ui-state-hover,
+.ui-state-focus {
+  border: 1px solid #bbbbbb;
+}
+
+.ui-button.ui-state-active {
+  border: 1px solid #777777;
+  font-weight: bold;
+}
+
+/**
+ * Corner radius
+ */
+.ui-corner-tl {
+  -moz-border-radius-topleft: 4px;
+  -webkit-border-top-left-radius: 4px;
+  border-top-left-radius: 4px;
+}
+
+.ui-corner-tr {
+  -moz-border-radius-topright: 4px;
+  -webkit-border-top-right-radius: 4px;
+  border-top-right-radius: 4px;
+}
+
+.ui-corner-bl {
+  -moz-border-radius-bottomleft: 4px;
+  -webkit-border-bottom-left-radius: 4px;
+  border-bottom-left-radius: 4px;
+}
+
+.ui-corner-br {
+  -moz-border-radius-bottomright: 4px;
+  -webkit-border-bottom-right-radius: 4px;
+  border-bottom-right-radius: 4px;
+}
+
+.ui-corner-top {
+  -moz-border-radius-topleft: 4px;
+  -moz-border-radius-topright: 4px;
+  -webkit-border-top-left-radius: 4px;
+  -webkit-border-top-right-radius: 4px;
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
+}
+
+.ui-corner-bottom {
+  -moz-border-radius-bottomleft: 4px;
+  -moz-border-radius-bottomright: 4px;
+  -webkit-border-bottom-left-radius: 4px;
+  -webkit-border-bottom-right-radius: 4px;
+  border-bottom-left-radius: 4px;
+  border-bottom-right-radius: 4px;
+}
+
+.ui-corner-right {
+  -moz-border-radius-bottomright: 4px;
+  -moz-border-radius-topright: 4px;
+  -webkit-border-bottom-right-radius: 4px;
+  -webkit-border-top-right-radius: 4px;
+  border-bottom-right-radius: 4px;
+  border-top-right-radius: 4px;
+}
+
+.ui-corner-left {
+  -moz-border-radius-bottomleft: 4px;
+  -moz-border-radius-topleft: 4px;
+  -webkit-border-bottom-left-radius: 4px;
+  -webkit-border-top-left-radius: 4px;
+  border-bottom-left-radius: 4px;
+  border-top-left-radius: 4px;
+}
+
+.ui-corner-all {
+  -moz-border-radius: 4px;
+  -webkit-border-radius: 4px;
+  border-radius: 4px;
+}
diff --git ui/ui.forms.inc ui/ui.forms.inc
index eabaca1..7a9ed47 100755
--- ui/ui.forms.inc
+++ ui/ui.forms.inc
@@ -448,6 +448,11 @@ function rules_ui_remove_event_submit($form, &$form_state) {
  */
 function rules_data_selection_autocomplete_path($element, &$form_state, $form) {
   $element['#autocomplete_path'] .= '/' . $form['#build_id'];
+  // Workaround for problems with jquery css in seven theme.
+  global $theme_key;
+  if ($theme_key) {
+    drupal_add_css(drupal_get_path('module', 'rules') . '/ui/rules.seven.css');
+  }
   $form_state['cache'] = TRUE;
   return $element;
 }