diff --git a/scripts/ztplot.py b/scripts/ztplot.py
index 719065bcaf7a2f43f1eca913bab846cfd0c7093e..f24500248bdb4a3e85a095bc9c45c2946e2464e6 100755
--- a/scripts/ztplot.py
+++ b/scripts/ztplot.py
@@ -200,7 +200,7 @@ class ZTPlot(kp.Module):
 
         plt.suptitle(
             "z-t-Plot for DetID-{0} (t0set: {1}), Run {2}, FrameIndex {3}, "
-            "TriggerCounter {4}, Overlays {5}, Trigger: {7}"
+            "TriggerCounter {4}, Overlays {5}, Trigger: {8}"
             "\n{7} UTC (time offset: {6} ns)".format(
                 event_info.det_id[0], self.t0set, event_info.run_id[0],
                 event_info.frame_index[0], event_info.trigger_counter[0],