diff --git a/packages/node_modules/@node-red/nodes/core/storage/10-file.js b/packages/node_modules/@node-red/nodes/core/storage/10-file.js
index b6531a3a6..c475ff844 100644
--- a/packages/node_modules/@node-red/nodes/core/storage/10-file.js
+++ b/packages/node_modules/@node-red/nodes/core/storage/10-file.js
@@ -76,7 +76,7 @@ module.exports = function(RED) {
                     filename = value;
                 }
             });
-
+            filename = filename || "";
             var fullFilename = filename;
             if (filename && RED.settings.fileWorkingDirectory && !path.isAbsolute(filename)) {
                 fullFilename = path.resolve(path.join(RED.settings.fileWorkingDirectory,filename));
@@ -321,7 +321,7 @@ module.exports = function(RED) {
                     filename = (value || "").replace(/\t|\r|\n/g,'');
                 }
             });
-
+            filename = filename || "";
             var fullFilename = filename;
             var filePath = "";
             if (filename && RED.settings.fileWorkingDirectory && !path.isAbsolute(filename)) {