diff --git a/chrome/content/zotero/xpcom/file.js b/chrome/content/zotero/xpcom/file.js
index 6e2755b03..c28217e6e 100644
--- a/chrome/content/zotero/xpcom/file.js
+++ b/chrome/content/zotero/xpcom/file.js
@@ -690,6 +690,21 @@ Zotero.File = new function(){
 	}
 	
 	
+	this.setNormalFilePermissions = function (file) {
+		return OS.File.setPermissions(
+			file,
+			{
+				unixMode: 0o644,
+				winAttributes: {
+					readOnly: false,
+					hidden: false,
+					system: false
+				}
+			}
+		);
+	}
+	
+	
 	this.createShortened = function (file, type, mode, maxBytes) {
 		file = this.pathToFile(file);
 		
diff --git a/chrome/content/zotero/xpcom/storage/storageLocal.js b/chrome/content/zotero/xpcom/storage/storageLocal.js
index 74cd5f44d..1816ad697 100644
--- a/chrome/content/zotero/xpcom/storage/storageLocal.js
+++ b/chrome/content/zotero/xpcom/storage/storageLocal.js
@@ -932,7 +932,7 @@ Zotero.Sync.Storage.Local = {
 				Zotero.File.checkFileAccessError(e, destPath, 'create');
 			}
 			
-			yield OS.File.setPermissions(destPath, { unixMode: 0o644 });
+			yield Zotero.File.setNormalFilePermissions(destPath);
 			
 			// If we're renaming the main file, processDownload() needs to know
 			if (renamed) {