diff --git a/packages/node_modules/@node-red/nodes/core/network/05-tls.js b/packages/node_modules/@node-red/nodes/core/network/05-tls.js
index 0c588fc66..3dd3ba8b5 100644
--- a/packages/node_modules/@node-red/nodes/core/network/05-tls.js
+++ b/packages/node_modules/@node-red/nodes/core/network/05-tls.js
@@ -31,7 +31,17 @@ module.exports = function(RED) {
         this.servername = (n.servername||"").trim();
         this.alpnprotocol = (n.alpnprotocol||"").trim();
 
-        if ((certPath && certPath.length > 0) || (keyPath && keyPath.length > 0) || (caPath && caPath.length > 0)) {
+        if (this.certType === "pfx" && p12Path && p12Path.length > 0) {
+            try {
+                this.pfx = fs.readFileSync(p12Path);
+            }
+            catch(err) {
+                this.valid = false;
+                this.error(err.toString());
+                return;
+            }
+        }
+        else if ((certPath && certPath.length > 0) || (keyPath && keyPath.length > 0) || (caPath && caPath.length > 0)) {
             if ( (certPath && certPath.length > 0) !== (keyPath && keyPath.length > 0)) {
                 this.valid = false;
                 this.error(RED._("tls.error.missing-file"));
@@ -55,16 +65,6 @@ module.exports = function(RED) {
                 return;
             }
         }
-        else if (p12Path && p12Path.length > 0) {
-            try {
-                this.pfx = fs.readFileSync(p12Path);
-            }
-            catch(err) {
-                this.valid = false;
-                this.error(err.toString());
-                return;
-            }
-        }
         else {
             if (this.credentials) {
                 var certData = this.credentials.certdata || "";