diff --git a/fio_visualizer.py b/fio_visualizer.py
index 6d23194..ad614b6 100755
--- a/fio_visualizer.py
+++ b/fio_visualizer.py
@@ -547,6 +547,8 @@ def set_check_text(self, iops, iops_tot, iops_threads, bw, bw_tot, bw_threads, l
 def init_fio():
     global parsing_thread, fio_process, timer
     numjobs = realtime_back.get_jobs(str(ui.fio_jobfile_path.text()))
+    if not numjobs:
+        numjobs = 1
     read_iops_data = {
             'type':'r_iops',
             'all':[],