diff --git a/calendrier/views.py b/calendrier/views.py
index a5da1ae..ad124ac 100644
--- a/calendrier/views.py
+++ b/calendrier/views.py
@@ -45,7 +45,7 @@ def calendar(request, pYear, pMonth):
     lPreviousMonth = lMonth - 1
     if lPreviousMonth == 0:
         lPreviousMonth = 12
-        lPreviousYear - 1
+        lPreviousYear -= 1
     lNextYear = lYear
     lNextMonth = lMonth + 1
     if lNextMonth == 13: