diff --git a/src/collector.ts b/src/collector.ts
index 483143e..02c2a0a 100644
--- a/src/collector.ts
+++ b/src/collector.ts
@@ -59,17 +59,17 @@ export interface ClaudeUsageSummary {
 }
 
 export async function checkClaudeDataExists(): Promise<boolean> {
-  try {
-    await readFile(CLAUDE_STATS_CACHE_PATH);
-    return true;
-  } catch {
-    return false;
-  }
+  const projectsPath = join(CLAUDE_DATA_PATH, CLAUDE_PROJECTS_DIR);
+  return await pathIsDirectory(projectsPath);
 }
 
 export async function loadClaudeStatsCache(): Promise<ClaudeStatsCache> {
-  const raw = await readFile(CLAUDE_STATS_CACHE_PATH, "utf8");
-  return JSON.parse(raw) as ClaudeStatsCache;
+  try {
+    const raw = await readFile(CLAUDE_STATS_CACHE_PATH, "utf8");
+    return JSON.parse(raw) as ClaudeStatsCache;
+  } catch {
+    return {};
+  }
 }
 
 export async function collectClaudeProjects(year: number): Promise<Set<string>> {