diff --git a/main.py b/main.py
index a6009fe..f25388f 100644
--- a/main.py
+++ b/main.py
@@ -12,8 +12,9 @@ app = FastAPI()
 templates = Jinja2Templates(directory="resources")
 
 public_url = os.environ.get("PUBLIC_URL", "http://localhost:8000").rstrip("/")
+mollie_apikey = os.environ.get("MOLLIE_API_KEY", "test_test")
 mollie_client = Client()
-mollie_client.set_api_key(os.environ.get("MOLLIE_API_KEY", "test_test"))
+mollie_client.set_api_key(mollie_apikey)
 
 
 @app.get("/", response_class=HTMLResponse)
@@ -93,6 +94,10 @@ async def rb_backend(request: Request):
             payment.id,
             {"metadata": {"revbank_status": "pending"}},
         )
+
+        if mollie_apikey.startswith("test_"):
+            return ok(amount="0.00", test_amount=payment.amount["value"])
+
         return ok(amount=payment.amount["value"])
 
     # Called when a pending Revbank transaction is aborted by the user.