diff --git a/file.c b/file.c
index 2a2f29cb78..fe971f4b96 100644
--- a/file.c
+++ b/file.c
@@ -189,6 +189,9 @@ cf_callback_remove(cf_callback_t func)
 void
 cf_timestamp_auto_precision(capture_file *cf)
 {
+#ifdef NEW_PACKET_LIST
+	int i;
+#endif
 	int prec = timestamp_get_precision();
 
 
@@ -229,6 +232,15 @@ cf_timestamp_auto_precision(capture_file *cf)
 			g_assert_not_reached();
 		}
 	}
+#ifdef NEW_PACKET_LIST
+  /* Set the column widths of those columns that show the time in
+     "command-line-specified" format. */
+  for (i = 0; i < cf->cinfo.num_cols; i++) {
+    if (col_has_time_fmt(&cf->cinfo, i)) {
+      new_packet_list_set_time_width(cf->cinfo.col_fmt[i], i);
+	}
+  }
+#endif
 }
 
 
@@ -2976,7 +2988,9 @@ cf_change_time_formats(capture_file *cf)
      "command-line-specified" format. */
   for (i = 0; i < cf->cinfo.num_cols; i++) {
     if (col_has_time_fmt(&cf->cinfo, i)) {
-#ifndef NEW_PACKET_LIST
+#ifdef NEW_PACKET_LIST
+      new_packet_list_set_time_width(cf->cinfo.col_fmt[i], i);
+#else
       packet_list_set_time_width(cf->cinfo.col_fmt[i], i);
 #endif
     }
diff --git a/gtk/new_packet_list.c b/gtk/new_packet_list.c
index 2cf7ee65e5..2c5e9628a7 100644
--- a/gtk/new_packet_list.c
+++ b/gtk/new_packet_list.c
@@ -829,5 +829,19 @@ void new_packet_list_colorize_packets(void)
 	packet_list_reset_colorized(packetlist);
 	gtk_widget_queue_draw (packetlist->view);
 }
+
+void new_packet_list_set_time_width(gint col_fmt, gint col)
+{
+	PangoLayout *layout;
+	GtkTreeViewColumn *column;
+	gint col_width;
+
+	column = gtk_tree_view_get_column (GTK_TREE_VIEW(packetlist->view), col);
+	layout = gtk_widget_create_pango_layout(packetlist->view, get_column_width_string(get_column_format(col), col));
+	pango_layout_get_pixel_size(layout, &col_width, NULL);
+	gtk_tree_view_column_set_fixed_width(column, col_width);
+	g_object_unref(G_OBJECT(layout));
+
+}
 #endif /* NEW_PACKET_LIST */
 
diff --git a/ui_util.h b/ui_util.h
index 8a4dc37c5b..dd390abc28 100644
--- a/ui_util.h
+++ b/ui_util.h
@@ -77,6 +77,7 @@ void new_packet_list_select_last_row(void);
 void new_packet_list_moveto_end(void);
 gboolean new_packet_list_check_end(void);
 gint new_packet_list_find_row_from_data(gpointer data, gboolean select);
+void new_packet_list_set_time_width(gint, gint);
 #else
 /* packet list related functions */
 void packet_list_clear(void);