diff --git a/backend/cameras.py.template b/backend/cameras.py.template
index f7d7c61967aaeb52988a39da010ba7b98f5f057d..001fe763574175b9b429e3c475371d012175d57b 100644
--- a/backend/cameras.py.template
+++ b/backend/cameras.py.template
@@ -3,7 +3,7 @@ restaurants = [
         "restaurant": "local",
         # the linear function estimating the waiting time t based on the number of people n and the number c of open checkouts is:
         # t = a * n / c + b
-        "a_factor": 30 # slope
+        "a_factor": 30, # slope
         "b_factor": 120, # y-intercept
         # list of all the cameras that correspond to a same restaurant
         "cameras":