diff --git a/src/wp-admin/js/theme.js b/src/wp-admin/js/theme.js
index 15fe7050f7..e91c0d16b7 100644
--- a/src/wp-admin/js/theme.js
+++ b/src/wp-admin/js/theme.js
@@ -105,7 +105,10 @@ themes.view.Appearance = wp.Backbone.View.extend({
 		view.render();
 		this.searchContainer
 			.append( $.parseHTML( '<label class="screen-reader-text" for="wp-filter-search-input">' + l10n.search + '</label>' ) )
-			.append( view.el );
+			.append( view.el )
+			.on( 'submit', function( event ) {
+				event.preventDefault();
+			});
 	},
 
 	// Checks when the user gets close to the bottom