diff --git a/optimisation_trajet.py b/optimisation_trajet.py
index c091c3a..f606d1f 100644
--- a/optimisation_trajet.py
+++ b/optimisation_trajet.py
@@ -88,7 +88,7 @@ def combinations(nb_items, total, start_at=0):
 
 
 def count_business_days(year, month, holidays={}):
-    """This function returns the number of working daysin the given month."""
+    """This function returns the number of working days in the given month."""
     bd_count = 0
     for i in range(1,32):
         try: