diff --git a/arrival_time_percentile.py b/arrival_time_percentile.py
index edee367897c4eafc3e7741783a90107d19034b13..264926d2a699cfbe578c72005aa979fbc5793309 100644
--- a/arrival_time_percentile.py
+++ b/arrival_time_percentile.py
@@ -48,9 +48,8 @@ def plot_arrival_time(sources: List[str], years: List[str], month: str, outfile:
         label = "< 1 day" if i == 0 else f"{i} - {i+1} days"
         ax.add_patch(plt.Rectangle((0,0), 0, 0, color=clr, label=label))
     plot_landmark(ax, sources)
-    current_month = months[0]
-    figname = current_month[0].upper()+current_month[1:]
-    ax.text(0, 0, " "+figname+" ", va="bottom", ha="left", color="k", \
+    month_name = month[0].upper()+month[1:]
+    ax.text(0, 0, " "+month_name+" ", va="bottom", ha="left", color="k", \
             fontsize=20, transform=ax.transAxes)
     ax.legend( loc="upper right", title="Arrival time\n(5th percentile)", \
                 fontsize=14, title_fontsize=14)