diff --git a/packages/node_modules/@node-red/runtime/lib/flows/util.js b/packages/node_modules/@node-red/runtime/lib/flows/util.js
index e753075b5..6ec1ef982 100644
--- a/packages/node_modules/@node-red/runtime/lib/flows/util.js
+++ b/packages/node_modules/@node-red/runtime/lib/flows/util.js
@@ -68,7 +68,7 @@ function mapEnvVarProperties(obj,prop,flow,config) {
         if (obj[prop][0] === "$" && (EnvVarPropertyRE_old.test(v) || EnvVarPropertyRE.test(v)) ) {
             const envVar = v.substring(2,v.length-1);
             const r = redUtil.getSetting(config, envVar, flow);
-            if (r !== undefined && r !== '') {
+            if (r !== undefined) {
                 obj[prop] = r
             }
         }