diff --git a/cashu/wallet/cli/cli.py b/cashu/wallet/cli/cli.py
index a75ed6c..800f704 100644
--- a/cashu/wallet/cli/cli.py
+++ b/cashu/wallet/cli/cli.py
@@ -263,6 +263,7 @@ async def pay(
     await wallet.load_mint()
     await print_balance(ctx)
     payment_hash = bolt11.decode(invoice).payment_hash
+    amount_mpp_msat = None
     if amount:
         # we assume `amount` to be in sats
         amount_mpp_msat = amount * 1000
diff --git a/tests/test_wallet_cli.py b/tests/test_wallet_cli.py
index 94cce01..5283ba2 100644
--- a/tests/test_wallet_cli.py
+++ b/tests/test_wallet_cli.py
@@ -9,7 +9,13 @@ from cashu.core.base import TokenV4
 from cashu.core.settings import settings
 from cashu.wallet.cli.cli import cli
 from cashu.wallet.wallet import Wallet
-from tests.helpers import is_deprecated_api_only, is_fake, is_regtest, pay_if_regtest
+from tests.helpers import (
+    get_real_invoice,
+    is_deprecated_api_only,
+    is_fake,
+    is_regtest,
+    pay_if_regtest,
+)
 
 
 @pytest.fixture(autouse=True, scope="session")
@@ -113,6 +119,20 @@ def test_balance(cli_prefix):
     assert result.exit_code == 0
 
 
+@pytest.mark.skipif(is_fake, reason="only works with FakeWallet")
+def test_pay_invoice_regtest(mint, cli_prefix):
+    invoice_dict = get_real_invoice(10)
+    invoice_payment_request = invoice_dict["payment_request"]
+    runner = CliRunner()
+    result = runner.invoke(
+        cli,
+        [*cli_prefix, "pay", invoice_payment_request, "-y"],
+    )
+    assert result.exception is None
+    print("PAY INVOICE")
+    print(result.output)
+
+
 @pytest.mark.skipif(is_regtest, reason="only works with FakeWallet")
 def test_invoice(mint, cli_prefix):
     if settings.debug_mint_only_deprecated: