diff --git a/docs/changelog.txt b/docs/changelog.txt
index 871526c85..b2165b010 100644
--- a/docs/changelog.txt
+++ b/docs/changelog.txt
@@ -46,6 +46,7 @@ changelog.txt uses a syntax similar to RST, with a few special sequences:
 - `gui/quickcmd`: now has it's own global keybinding for your convenience: Ctrl-Shift-A
 - Many DFHack windows can now be unfocused by clicking somewhere not over the tool window. This has the same effect as pinning previously did, but without the extra clicking.
 - `overlay`: overlay widgets can now specify a default enabled state if they are not already set in the player's overlay config file
+-@ New borders for DFHack tool windows -- tell us what you think!
 
 ## Documentation
 
diff --git a/library/lua/gui.lua b/library/lua/gui.lua
index d870399a3..2cb84d682 100644
--- a/library/lua/gui.lua
+++ b/library/lua/gui.lua
@@ -888,13 +888,17 @@ THIN_FRAME = make_frame('Thin', false)
 -- for compatibility with pre-steam code
 GREY_LINE_FRAME = WINDOW_FRAME
 
-function paint_frame(dc,rect,style,title,inactive, pause_forced)
+function paint_frame(dc,rect,style,title,inactive,pause_forced,resizable)
     local pen = style.frame_pen
     local x1,y1,x2,y2 = dc.x1+rect.x1, dc.y1+rect.y1, dc.x1+rect.x2, dc.y1+rect.y2
     dscreen.paintTile(style.lt_frame_pen or pen, x1, y1)
     dscreen.paintTile(style.rt_frame_pen or pen, x2, y1)
     dscreen.paintTile(style.lb_frame_pen or pen, x1, y2)
-    dscreen.paintTile(style.rb_frame_pen or pen, x2, y2)
+    local rb_frame_pen = style.rb_frame_pen
+    if rb_frame_pen == WINDOW_FRAME.rb_frame_pen and not resizable then
+        rb_frame_pen = PANEL_FRAME.rb_frame_pen
+    end
+    dscreen.paintTile(rb_frame_pen or pen, x2, y2)
     dscreen.fillRect(style.t_frame_pen or style.h_frame_pen or pen,x1+1,y1,x2-1,y1)
     dscreen.fillRect(style.b_frame_pen or style.h_frame_pen or pen,x1+1,y2,x2-1,y2)
     dscreen.fillRect(style.l_frame_pen or style.v_frame_pen or pen,x1,y1+1,x1,y2-1)
diff --git a/library/lua/gui/widgets.lua b/library/lua/gui/widgets.lua
index 473f09db9..653107179 100644
--- a/library/lua/gui/widgets.lua
+++ b/library/lua/gui/widgets.lua
@@ -502,7 +502,7 @@ function Panel:onRenderFrame(dc, rect)
             and not self.parent_view:hasFocus()
     local pause_forced = self.parent_view and self.parent_view.force_pause
     gui.paint_frame(dc, rect, self.frame_style, self.frame_title, inactive,
-            pause_forced)
+            pause_forced, self.resizable)
     if self.kbd_get_pos then
         local pos = self.kbd_get_pos()
         local pen = to_pen{fg=COLOR_GREEN, bg=COLOR_BLACK}