diff --git a/main.go b/main.go
index a180a08..daa8db7 100644
--- a/main.go
+++ b/main.go
@@ -32,7 +32,12 @@ func main() {
 		log.Fatalf("Error opening file: %v", err)
 	}
 
-	defer f.Close()
+	defer func(f *os.File) {
+		err := f.Close()
+		if err != nil {
+			log.Fatalf("Error closing file: %v", err)
+		}
+	}(f)
 
 	writer := io.MultiWriter(os.Stdout, f)
 	log.SetOutput(writer)