diff --git a/src/components/Dashboard.tsx b/src/components/Dashboard.tsx
index 58e560b..6eb54a5 100644
--- a/src/components/Dashboard.tsx
+++ b/src/components/Dashboard.tsx
@@ -150,6 +150,8 @@ export function Dashboard({ user }: DashboardProps) {
       return;
     }
 
+    let latestPrefs = preferences;
+
     if (count > 0) {
       const today = getTodayString();
       const now = new Date().toISOString();
@@ -161,12 +163,12 @@ export function Dashboard({ user }: DashboardProps) {
       });
 
       // Update preferences with last usage time
-      const updatedPrefs = {
+      latestPrefs = {
         ...preferences,
         [substance === 'nicotine' ? 'lastNicotineUsageTime' : 'lastWeedUsageTime']: now,
       };
-      await savePreferencesAsync(updatedPrefs);
-      setPreferences(updatedPrefs);
+      await savePreferencesAsync(latestPrefs);
+      setPreferences(latestPrefs);
     }
 
     setShowUsagePrompt(false);
@@ -176,7 +178,7 @@ export function Dashboard({ user }: DashboardProps) {
     setRefreshKey(prev => prev + 1);
 
     // Check for new achievements immediately
-    await checkAndUnlockAchievements(usage, updatedPrefs, achievements);
+    await checkAndUnlockAchievements(usage, latestPrefs, achievements);
   };
 
   const handleGeneratePlan = async () => {