diff --git a/lib/core/src/lib/auth/basic-auth/process-auth.ts b/lib/core/src/lib/auth/basic-auth/process-auth.ts
index 116902c123..8a1ff1cb78 100644
--- a/lib/core/src/lib/auth/basic-auth/process-auth.ts
+++ b/lib/core/src/lib/auth/basic-auth/process-auth.ts
@@ -158,7 +158,7 @@ export class ProcessAuth {
             base64 = btoa(str);
         }
 
-        return base64;
+        return `Basic ${base64}`;
     }
 
     /**