diff --git a/src/cloudron.js b/src/cloudron.js
index 67f65c349..8b7872c01 100644
--- a/src/cloudron.js
+++ b/src/cloudron.js
@@ -140,7 +140,7 @@ async function runStartupTasks() {
     // we used to run tasks in parallel but simultaneous nginx reloads was causing issues
     for (let i = 0; i < tasks.length; i++) {
         const [error] = await safe(tasks[i]());
-        if (error) debug(`Startup task at index ${i} failed: ${error.message}`);
+        if (error) debug(`Startup task at index ${i} failed: ${error.message} ${error.stack}`);
     }
 }
 
diff --git a/src/cron.js b/src/cron.js
index 49b5149f7..40d8c3947 100644
--- a/src/cron.js
+++ b/src/cron.js
@@ -66,15 +66,14 @@ function getCronSeed() {
     let hour = null;
     let minute = null;
 
-    let tmp = safe.fs.readFileSync(paths.CRON_SEED_FILE, 'utf8');
-    if (tmp) tmp = tmp.split(':');
-
-    if (tmp.length === 2) {
-        hour = parseInt(tmp[0]);
-        minute = parseInt(tmp[1]);
+    const seedData = safe.fs.readFileSync(paths.CRON_SEED_FILE, 'utf8') || '';
+    const parts = seedData.split(':');
+    if (parts.length === 2) {
+        hour = parseInt(parts[0]) || null;
+        minute = parseInt(parts[1]) || null;
     }
 
-    if ((isNaN(hour) || hour < 0 || hour > 23) || (isNaN(minute) || minute < 0 || minute > 60)) {
+    if ((hour == null || hour < 0 || hour > 23) || (minute == null || minute < 0 || minute > 60)) {
         hour = Math.floor(24 * Math.random());
         minute = Math.floor(60 * Math.random());