diff --git a/src/SASjs.ts b/src/SASjs.ts
index e6db53d7..68946127 100644
--- a/src/SASjs.ts
+++ b/src/SASjs.ts
@@ -980,7 +980,7 @@ export default class SASjs {
         ? this.sasjsConfig.pathSASViya
         : this.sasjsConfig.serverType === ServerType.Sas9
         ? this.sasjsConfig.pathSAS9
-        : this.sasjsConfig.pathSASJS
+        : this.sasjsConfig.pathSASJS || ''
 
     this.authManager = new AuthManager(
       this.sasjsConfig.serverUrl,
diff --git a/src/types/SASjsConfig.ts b/src/types/SASjsConfig.ts
index a40db2f8..8aab6784 100644
--- a/src/types/SASjsConfig.ts
+++ b/src/types/SASjsConfig.ts
@@ -16,7 +16,7 @@ export class SASjsConfig {
    * The location of the STP Process Web Application.  By default the adapter
    * will use '/SASjsApi/stp/execute' on SAS JS.
    */
-  pathSASJS: string = ''
+  pathSASJS?: string = ''
   /**
    * The location of the Stored Process Web Application.  By default the adapter
    * will use '/SASStoredProcess/do' on SAS 9.