diff --git a/addon/-private/collapse-tree.js b/addon/-private/collapse-tree.js
index 1f42a7c8b..fba11d785 100644
--- a/addon/-private/collapse-tree.js
+++ b/addon/-private/collapse-tree.js
@@ -83,31 +83,27 @@ export const TableRowMeta = EmberObject.extend({
     }
   ),
 
-  isGroupIndeterminate: computed(
-    '_tree.{selection.[],selectionMatchFunction}',
-    '_parentMeta.isSelected',
-    function() {
-      let rowValue = get(this, '_rowValue');
-      let selection = get(this, '_tree.selection');
-      let selectionMatchFunction = get(this, '_tree.selectionMatchFunction');
-
-      if (!rowValue.children || !isArray(rowValue.children)) {
-        return false;
-      }
+  isGroupIndeterminate: computed('_tree.{selection.[],selectionMatchFunction}', function() {
+    let rowValue = get(this, '_rowValue');
+    let selection = get(this, '_tree.selection');
+    let selectionMatchFunction = get(this, '_tree.selectionMatchFunction');
 
-      if (!selection || !isArray(selection)) {
-        return false;
-      }
+    if (!rowValue.children || !isArray(rowValue.children)) {
+      return false;
+    }
 
-      if (selectionMatchFunction) {
-        return rowValue.children.some(child =>
-          selection.some(item => selectionMatchFunction(item, child))
-        );
-      }
+    if (!selection || !isArray(selection)) {
+      return false;
+    }
 
-      return rowValue.children.some(child => selection.includes(child));
+    if (selectionMatchFunction) {
+      return rowValue.children.some(child =>
+        selection.some(item => selectionMatchFunction(item, child))
+      );
     }
-  ),
+
+    return rowValue.children.some(child => selection.includes(child));
+  }),
 
   canCollapse: computed(
     '_tree.{enableTree,enableCollapse}',