diff --git a/modules/ve-mw/init/ve.init.mw.trackSubscriber.js b/modules/ve-mw/init/ve.init.mw.trackSubscriber.js
index 453deb3c7d..fd5c8c936d 100644
--- a/modules/ve-mw/init/ve.init.mw.trackSubscriber.js
+++ b/modules/ve-mw/init/ve.init.mw.trackSubscriber.js
@@ -151,7 +151,7 @@
 			page_title: mw.config.get( 'wgPageName' ),
 			page_ns: mw.config.get( 'wgNamespaceNumber' ),
 			// eslint-disable-next-line no-jquery/no-global-selector
-			revision_id: mw.config.get( 'wgRevisionId' ) || $( 'input[name=parentRevId]' ).val(),
+			revision_id: mw.config.get( 'wgRevisionId' ) || +$( 'input[name=parentRevId]' ).val(),
 			editing_session_id: editingSessionId,
 			page_token: mw.user.getPageviewToken(),
 			session_token: mw.user.sessionId(),