diff --git a/Core/src/org/sleuthkit/autopsy/timeline/ui/TimeLineChart.java b/Core/src/org/sleuthkit/autopsy/timeline/ui/TimeLineChart.java
index d02da89609..28230d4dc2 100644
--- a/Core/src/org/sleuthkit/autopsy/timeline/ui/TimeLineChart.java
+++ b/Core/src/org/sleuthkit/autopsy/timeline/ui/TimeLineChart.java
@@ -251,8 +251,8 @@ public interface TimeLineChart<X> extends TimeLineView {
             final X end = getSpanEnd();
             Tooltip.uninstall(this, tooltip);
             tooltip = new Tooltip(
-                    NbBundle.getMessage(this.getClass(), "Timeline.ui.TimeLineChart.tooltip.text", formatSpan(start),
-                                        formatSpan(end)));
+                    NbBundle.getMessage(TimeLineChart.class, "Timeline.ui.TimeLineChart.tooltip.text", formatSpan(start),
+                            formatSpan(end)));
             Tooltip.install(this, tooltip);
         }