diff --git a/chrome/content/zotero-platform/win/overlay.css b/chrome/content/zotero-platform/win/overlay.css
index 674b22915..d814488c9 100644
--- a/chrome/content/zotero-platform/win/overlay.css
+++ b/chrome/content/zotero-platform/win/overlay.css
@@ -2,11 +2,28 @@
 	margin-left: 5px;
 }
 
+#zotero-tb-search .textbox-search-icon {
+	visibility: hidden;
+}
+
 #zotero-tb-search-menu-button {
-	list-style-image: url(mainwindow-dropdown-arrow.png);
+	margin: 0 -1px 0 -4px;
+	padding: 0;
+	border: 0;
+	background: transparent;
+	list-style-image: url("chrome://browser/skin/mainwindow-dropdown-arrow.png");
 	-moz-image-region: rect(0, 13px, 11px, 0);
 }
 
+#zotero-tb-search-menu-button .button-menu-dropmarker {
+	display: none;
+}
+
+#zotero-tb-search-menu-button:hover:active,
+#zotero-tb-search-menu-button[open="true"] {
+	-moz-image-region: rect(0, 26px, 11px, 13px);
+}
+
 #zotero-tb-sync-warning {
 	margin-right: 2px;
 }