diff --git a/packages/node_modules/@node-red/nodes/core/function/90-exec.js b/packages/node_modules/@node-red/nodes/core/function/90-exec.js
index a1e51e7f1..0df3e6012 100644
--- a/packages/node_modules/@node-red/nodes/core/function/90-exec.js
+++ b/packages/node_modules/@node-red/nodes/core/function/90-exec.js
@@ -31,10 +31,10 @@ module.exports = function(RED) {
         this.timer = Number(n.timer || 0)*1000;
         this.activeProcesses = {};
         this.oldrc = (n.oldrc || false).toString();
+	this.execOpt = {encoding:'binary', maxBuffer:10000000};
         var node = this;
 
-        var execOpt = {encoding:'binary', maxBuffer:10000000};
-	if (process.platform === 'linux' && fs.existsSync('/bin/bash')) { execOpt.shell = '/bin/bash'; }
+	if (process.platform === 'linux' && fs.existsSync('/bin/bash')) { node.execOpt.shell = '/bin/bash'; }
 	    
 	var cleanup = function(p) {
             node.activeProcesses[p].kill();
@@ -131,7 +131,7 @@ module.exports = function(RED) {
                     if (node.append.trim() !== "") { cl += " "+node.append; }
                     /* istanbul ignore else  */
                     if (RED.settings.verbose) { node.log(cl); }
-                    child = exec(cl, execOpt, function (error, stdout, stderr) {
+                    child = exec(cl, node.execOpt, function (error, stdout, stderr) {
                         var msg2, msg3;
                         delete msg.payload;
                         if (stderr) {