diff --git a/chrome/content/zotero/preferences/preferences.xhtml b/chrome/content/zotero/preferences/preferences.xhtml
index 5937cafcf5..fd87d09535 100644
--- a/chrome/content/zotero/preferences/preferences.xhtml
+++ b/chrome/content/zotero/preferences/preferences.xhtml
@@ -86,12 +86,10 @@
 		<richlistbox id="prefs-navigation"></richlistbox>
 		<html:div id="prefs-inner-container">
 			<html:div id="prefs-search-container">
-				<html:div id="prefs-subpane-back-button-container">
-					<toolbarbutton
-						id="prefs-subpane-back-button"
-						aria-label="&zotero.pdfReader.back;"
-						hidden="true"/>
-				</html:div>
+				<toolbarbutton
+					id="prefs-subpane-back-button"
+					aria-label="&zotero.pdfReader.back;"
+					hidden="true"/>
 				<search-textbox id="prefs-search" placeholder="&zotero.lookup.button.search;" timeout="1"/>
 			</html:div>
 			<html:div id="prefs-content">
diff --git a/scss/preferences.scss b/scss/preferences.scss
index a61696509d..2b5a4957d0 100644
--- a/scss/preferences.scss
+++ b/scss/preferences.scss
@@ -80,6 +80,7 @@
 }
 
 #prefs-search {
+	margin-inline-start: auto;
 	width: 16em;
 }
 
@@ -127,12 +128,8 @@
 	width: 24px;
 }
 
-#prefs-subpane-back-button-container {
-	flex: 1;
-}
-
 #prefs-subpane-back-button {
-	margin-left: 20px;
+	margin-inline-start: 20px;
 	@include svgicon-menu("chevron", "universal", "20");
 	rotate: 90deg;
 }