diff --git a/test/nodes/core/function/10-function_spec.js b/test/nodes/core/function/10-function_spec.js
index 59efd9db4..609fac1d3 100644
--- a/test/nodes/core/function/10-function_spec.js
+++ b/test/nodes/core/function/10-function_spec.js
@@ -18,7 +18,7 @@ var should = require("should");
 var functionNode = require("nr-test-utils").require("@node-red/nodes/core/function/10-function.js");
 var Context = require("nr-test-utils").require("@node-red/runtime/lib/nodes/context");
 var helper = require("node-red-node-test-helper");
-
+var RED = require("nr-test-utils").require("node-red/lib/red");
 describe('function node', function() {
 
     before(function(done) {
@@ -1415,7 +1415,9 @@ describe('function node', function() {
     });
 
     describe('externalModules', function() {
-
+        afterEach(function() {
+            delete RED.settings.functionExternalModules;
+        })
         it('should fail if using OS module without functionExternalModules set to true', function(done) {
             var flow = [
                 {id:"n1",type:"function",wires:[["n2"]],func:"msg.payload = os.type(); return msg;", "libs": [{var:"os", module:"os"}]},
@@ -1433,9 +1435,7 @@ describe('function node', function() {
                 {id:"n1",type:"function",wires:[["n2"]],func:"msg.payload = os.type(); return msg;"},
                 {id:"n2", type:"helper"}
             ];
-            helper.settings({
-                functionExternalModules: true
-            })
+            RED.settings.functionExternalModules = true;
             helper.load(functionNode, flow, function() {
                 var n1 = helper.getNode("n1");
                 var n2 = helper.getNode("n2");
@@ -1459,9 +1459,7 @@ describe('function node', function() {
                 {id:"n1",type:"function",wires:[["n2"]],func:"msg.payload = os.type(); return msg;", "libs": [{var:"os", module:"os"}]},
                 {id:"n2", type:"helper"}
             ];
-            helper.settings({
-                functionExternalModules: true
-            })
+            RED.settings.functionExternalModules = true;
             helper.load(functionNode, flow, function() {
                 var n1 = helper.getNode("n1");
                 var n2 = helper.getNode("n2");
@@ -1482,9 +1480,7 @@ describe('function node', function() {
                 {id:"n1",type:"function",wires:[["n2"]],func:"msg.payload = os.type(); return msg;", "libs": [{var:"flow", module:"os"}]},
                 {id:"n2", type:"helper"}
             ];
-            helper.settings({
-                functionExternalModules: true
-            })
+            RED.settings.functionExternalModules = true;
             helper.load(functionNode, flow, function() {
                 var n1 = helper.getNode("n1");
                 should.not.exist(n1);