diff --git a/src/components/ContributionCalendar.jsx b/src/components/ContributionCalendar.jsx
index 63d3cf8..f34c977 100644
--- a/src/components/ContributionCalendar.jsx
+++ b/src/components/ContributionCalendar.jsx
@@ -97,7 +97,7 @@ export default function ContributionCalendar({ data }) {
   }, []);
 
   // Determine how many weeks to show
-  const weeksToShow = isMobile && !expanded ? 20 : 52;
+  const weeksToShow = isMobile && !expanded ? 19 : 52;
   const startWeek = 52 - weeksToShow;
   const visibleDays = days.slice(startWeek * 7, 52 * 7);
   const visibleMonthLabels = monthLabels.filter(l => l.week >= startWeek);