diff --git a/chrome/locale/en-US/zotero/zotero.properties b/chrome/locale/en-US/zotero/zotero.properties
index 924cc9600..e1e5ca843 100644
--- a/chrome/locale/en-US/zotero/zotero.properties
+++ b/chrome/locale/en-US/zotero/zotero.properties
@@ -35,7 +35,7 @@ general.enable						= Enable
 general.disable						= Disable
 
 general.operationInProgress = A Zotero operation is currently in progress.
-general.operationInProgress.waitUntilFinished = Please wait until has finished.
+general.operationInProgress.waitUntilFinished = Please wait until it has finished.
 general.operationInProgress.waitUntilFinishedAndTryAgain = Please wait until it has finished and try again.
 
 install.quickStartGuide				= Quick Start Guide