diff --git a/gtk/gtktreelistrowsorter.c b/gtk/gtktreelistrowsorter.c
index c4f63c1280..a35996e9ac 100644
--- a/gtk/gtktreelistrowsorter.c
+++ b/gtk/gtktreelistrowsorter.c
@@ -354,7 +354,7 @@ gtk_tree_list_row_sort_keys_new (GtkTreeListRowSorter *self)
                               sizeof (gpointer[MAX_KEY_DEPTH]));
 
   if (self->sorter)
-    result->sort_keys = gtk_sort_keys_ref (gtk_sorter_get_keys (self->sorter));
+    result->sort_keys = gtk_sorter_get_keys (self->sorter);
   result->cached_keys = g_hash_table_new (NULL, NULL);
 
   return (GtkSortKeys *) result;
diff --git a/gtk/inspector/controllers.c b/gtk/inspector/controllers.c
index e5e90e663d..4f41ba3a56 100644
--- a/gtk/inspector/controllers.c
+++ b/gtk/inspector/controllers.c
@@ -265,6 +265,8 @@ gtk_inspector_controllers_dispose (GObject *object)
 
   gtk_widget_unparent (gtk_widget_get_first_child (GTK_WIDGET (self)));
 
+  g_clear_object (&self->sizegroup);
+
   G_OBJECT_CLASS (gtk_inspector_controllers_parent_class)->dispose (object);
 }
 
@@ -274,7 +276,7 @@ gtk_inspector_controllers_class_init (GtkInspectorControllersClass *klass)
   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 
-  object_class->dispose= gtk_inspector_controllers_dispose;
+  object_class->dispose = gtk_inspector_controllers_dispose;
 
   gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
 }
diff --git a/gtk/inspector/gtktreemodelcssnode.c b/gtk/inspector/gtktreemodelcssnode.c
index e6d87dc985..2939e438cf 100644
--- a/gtk/inspector/gtktreemodelcssnode.c
+++ b/gtk/inspector/gtktreemodelcssnode.c
@@ -345,6 +345,8 @@ gtk_tree_model_css_node_finalize (GObject *object)
       priv->root = NULL;
     }
 
+  g_free (priv->column_types);
+
   G_OBJECT_CLASS (gtk_tree_model_css_node_parent_class)->finalize (object);
 }