diff --git a/Core/src/org/sleuthkit/autopsy/timeline/TimeLineTopComponent.java b/Core/src/org/sleuthkit/autopsy/timeline/TimeLineTopComponent.java
index 1ca594fa14..aca105e525 100644
--- a/Core/src/org/sleuthkit/autopsy/timeline/TimeLineTopComponent.java
+++ b/Core/src/org/sleuthkit/autopsy/timeline/TimeLineTopComponent.java
@@ -25,7 +25,6 @@ import java.util.logging.Level;
 import javafx.application.Platform;
 import javafx.beans.InvalidationListener;
 import javafx.beans.Observable;
-import javafx.collections.ObservableList;
 import javafx.scene.Scene;
 import javafx.scene.control.SplitPane;
 import javafx.scene.control.Tab;
@@ -98,7 +97,7 @@ public final class TimeLineTopComponent extends TopComponent implements Explorer
     private final InvalidationListener selectedEventsListener = new InvalidationListener() {
         @Override
         public void invalidated(Observable observable) {
-            ObservableList<Long> selectedEventIDs = controller.getSelectedEventIDs();
+            List<Long> selectedEventIDs = controller.getSelectedEventIDs();
 
             //depending on the active view mode, we either update the dataResultPanel, or update the contentViewerPanel directly.
             switch (controller.getViewMode()) {
@@ -124,7 +123,7 @@ public final class TimeLineTopComponent extends TopComponent implements Explorer
                                 LOGGER.log(Level.SEVERE, "Selecting the event node was vetoed.", ex); // NON-NLS
                             }
                             //if there is only one event selected push it into content viewer.
-                            if (selectedEventIDs.size() == 1) {
+                            if (childArray.length == 1) {
                                 contentViewerPanel.setNode(childArray[0]);
                             } else {
                                 contentViewerPanel.setNode(null);
@@ -137,7 +136,7 @@ public final class TimeLineTopComponent extends TopComponent implements Explorer
                         LOGGER.log(Level.SEVERE, "Failed to lookup Sleuthkit object backing a SingleEvent.", ex); // NON-NLS
                         Platform.runLater(() -> {
                             Notifications.create()
-                                        .owner(jFXViewPanel.getScene().getWindow())
+                                    .owner(jFXViewPanel.getScene().getWindow())
                                     .text(Bundle.TimelineTopComponent_selectedEventListener_errorMsg())
                                     .showError();
                         });