diff --git a/web/src/app.ts b/web/src/app.ts
index e1c1220..31a2720 100644
--- a/web/src/app.ts
+++ b/web/src/app.ts
@@ -64,18 +64,10 @@ export default class App extends Vue {
       this.consoleLogAppender.threshold = commonLevel;
     }
 
-    try {
-      this.apiLogAppender.batchSize =
-        parseInt(process.env.VUE_APP_API_LOG_BATCH_SIZE, 10);
-    } catch {
-      this.apiLogAppender.batchSize = 5;
-    }
+    const batchSize = parseInt(process.env.VUE_APP_API_LOG_BATCH_SIZE, 10);
+    if (!isNaN(batchSize)) { this.apiLogAppender.batchSize = Math.max(batchSize, 1); }
 
-    try {
-      this.apiLogAppender.minimumTimePassedInSec
-        = parseInt(process.env.VUE_APP_API_LOG_MIN_TIME_PASSED_IN_SEC, 10);
-    } catch {
-      this.apiLogAppender.minimumTimePassedInSec = 5;
-    }
+    const minTimeInSec = parseInt(process.env.VUE_APP_API_LOG_MIN_TIME_PASSED_IN_SEC, 10);
+    if (!isNaN(minTimeInSec)) { this.apiLogAppender.minimumTimePassedInSec = Math.max(minTimeInSec, 1); }
   }
 }