diff --git a/MBB.py b/MBB.py
index f67624ae2ee9f8a4a1f8f07f836c4c9da9ac5f3b..61310e66b423687c5663da51ca82f15b07ae73f9 100755
--- a/MBB.py
+++ b/MBB.py
@@ -729,7 +729,7 @@ def plot_helpfulness(df, outpath, toolname):
         mpatches.Patch(color=colors[3], label='not helpful report')
     ]
     ax.legend(handles=handles, ncol=2, loc='center left', bbox_to_anchor=(0.05, -0.3))
-    #ax.set_title(f"Helpfulness of {toolname} error reports")
+    #ax.set_title(f"Helpfulness of {toolname.upper()} Error Reports")
     ax.set_xlabel("Percentage of error reports")
     ax.set_ylabel("MPI feature")
     plt.tight_layout()