diff --git a/chrome/content/zotero/xpcom/storage.js b/chrome/content/zotero/xpcom/storage.js
index 499513b6e..ab0a86238 100644
--- a/chrome/content/zotero/xpcom/storage.js
+++ b/chrome/content/zotero/xpcom/storage.js
@@ -863,6 +863,7 @@ Zotero.Sync.Storage = new function () {
 							return;
 						}
 						
+						var mtime = row.mtime;
 						//Zotero.debug("Stored mtime is " + row.mtime);
 						//Zotero.debug("File mtime is " + fmtime);
 						
@@ -871,8 +872,8 @@ Zotero.Sync.Storage = new function () {
 							Zotero.debug("Remote mod time for item " + lk + " is " + itemModTimes[item.id]);
 							
 							// Ignore attachments whose stored mod times haven't changed
-							if (row.storageModTime == itemModTimes[item.id]) {
-								Zotero.debug("Storage mod time (" + row.storageModTime + ") "
+							if (mtime == itemModTimes[item.id]) {
+								Zotero.debug("Storage mod time (" + mtime + ") "
 									+ "hasn't changed for item " + lk);
 								return;
 							}
@@ -882,8 +883,6 @@ Zotero.Sync.Storage = new function () {
 							updatedStates[item.id] = Zotero.Sync.Storage.SYNC_STATE_FORCE_DOWNLOAD;
 						}
 						
-						var mtime = row.mtime;
-						
 						// If stored time matches file, it hasn't changed locally
 						if (mtime == fmtime) {
 							return;