diff --git a/owa-plugin.php b/owa-plugin.php
index 3dc2cd9..579e0fb 100644
--- a/owa-plugin.php
+++ b/owa-plugin.php
@@ -558,7 +558,8 @@ function getTrackerSnippetTemplate() {
 		$tag .= '<script type="text/javascript">' . "\n";
 		$tag .= "var owa_cmds = owa_cmds || []; \n";
 		
-		$base_url = $this->getOption('owaEndpoint');
+		$base_url = esc_url( $this->getOption('owaEndpoint') );
+		
 		$tag .= "var owa_baseUrl = '$base_url'; \n";
 		
 		$tag .= "%s";