diff --git a/src/css/widget/multiselect/multiselect.insert.combo.css b/src/css/widget/multiselect/multiselect.insert.combo.css
new file mode 100644
index 0000000000..23dc44e668
--- /dev/null
+++ b/src/css/widget/multiselect/multiselect.insert.combo.css
@@ -0,0 +1,3 @@
+.bi-multi-select-insert-combo .multi-select-trigger-icon-button {
+  font-size: 16px;
+}