diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 081dbd377..4db52a440 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -5,6 +5,14 @@ on:
     - cron: '0 11 11 * *'
   push:
     branches: [ master, dev ]
+  workflow_call:
+    secrets:
+      STRIPE_SECRET_KEY:
+        required: true
+      STRIPE_PUBLISHABLE_KEY:
+        required: true
+      STRIPE_WEBHOOK_SECRET_KEY:
+        required: true
 
 jobs:
   run-tests:
diff --git a/schedula/utils/form/config.py b/schedula/utils/form/config.py
index 265eea216..2acb922f4 100644
--- a/schedula/utils/form/config.py
+++ b/schedula/utils/form/config.py
@@ -134,5 +134,6 @@ class Config:
     SQLALCHEMY_TRACK_MODIFICATIONS = False
 
     STRIPE_SECRET_KEY = os.environ.get("STRIPE_SECRET_KEY")
+    assert STRIPE_SECRET_KEY.startswith('sk_')
     STRIPE_PUBLISHABLE_KEY = os.environ.get("STRIPE_PUBLISHABLE_KEY")
     STRIPE_WEBHOOK_SECRET_KEY = os.environ.get("STRIPE_WEBHOOK_SECRET_KEY")