diff --git a/budget/models.py b/budget/models.py
index 8f570fb9..1da44893 100644
--- a/budget/models.py
+++ b/budget/models.py
@@ -255,11 +255,11 @@ class Bill(db.Model):
 
     def pay_each(self):
         """Compute what each share has to pay"""
-	if self.owers:
-                # FIXME: SQL might dot that more efficiently
-		return self.amount / sum(i.weight for i in self.owers)
-	else:
-		return 0
+        if self.owers:
+            # FIXME: SQL might dot that more efficiently
+            return self.amount / sum(i.weight for i in self.owers)
+        else:
+            return 0
 
     def __repr__(self):
         return "<Bill of %s from %s for %s>" % (self.amount,
diff --git a/budget/tests.py b/budget/tests.py
index 3a3d850a..8905a6e2 100644
--- a/budget/tests.py
+++ b/budget/tests.py
@@ -292,10 +292,10 @@ class BudgetTestCase(TestCase):
         self.assertTrue(models.Project.query.get("demo") is not None)
 
     def test_authentication(self):
-	# try to authenticate without credentials should redirect
-	# to the authentication page
-	resp = self.app.post("/authenticate")
-	self.assertIn("Authentication", resp.data)
+        # try to authenticate without credentials should redirect
+        # to the authentication page
+        resp = self.app.post("/authenticate")
+        self.assertIn("Authentication", resp.data)
 
         # raclette that the login / logout process works
         self.create_project("raclette")