diff --git a/src/gtk/main_window.c b/src/gtk/main_window.c
index 01a3a8a93..d2749f58d 100644
--- a/src/gtk/main_window.c
+++ b/src/gtk/main_window.c
@@ -1020,6 +1020,9 @@ void create_mainwindow(void)
 	widgets.studypad_dialog = NULL;
 	widgets.entry_devotional = NULL;
 
+	widgets.html_parallel = NULL;
+	widgets.html_parallel_dialog = NULL;
+
 	/* A rough scektch of the main window (widgets.app) and it's children
 	 *                widgets.app
 	 *                     |
diff --git a/src/gtk/parallel_tab.c b/src/gtk/parallel_tab.c
index 729dde87c..963a70295 100644
--- a/src/gtk/parallel_tab.c
+++ b/src/gtk/parallel_tab.c
@@ -282,6 +282,7 @@ void gui_destroy_parallel_tab(void)
 	sync_on = FALSE;
 	gtk_widget_destroy(parallel_vbox);
 	gtk_widget_show(widgets.hpaned);
+	widgets.html_parallel_dialog = NULL;
 }
 
 /******   end of file   ******/