diff --git a/assessment_and_tracking/track_participation.R b/assessment_and_tracking/track_participation.R
index 8b9f368..b8b6e1c 100644
--- a/assessment_and_tracking/track_participation.R
+++ b/assessment_and_tracking/track_participation.R
@@ -107,7 +107,7 @@ ggplot(d) +
     scale_x_discrete("Number of questions answered") +
     scale_y_continuous("Number of students") +
     ##scale_fill_brewer("Absences", palette="Blues") +
-    scale_fill_manual("Absences", values=color.gradient) +
+    scale_fill_manual("Opt-outs", values=color.gradient) +
     theme_bw()
 
 dev.off()