diff --git a/docs/changelog.txt b/docs/changelog.txt
index 850879a3a..19d87faad 100644
--- a/docs/changelog.txt
+++ b/docs/changelog.txt
@@ -73,6 +73,7 @@ Template for new versions:
 ## Lua
 - ``dfhack.gui.revealInDwarfmodeMap``: gained ``highlight`` parameter to control setting the tile highlight on the zoom target
 - ``dfhack.maps.getWalkableGroup``: get the walkability group of a tile
+- ``gui.FRAME_THIN``: a panel frame suitable for floating tooltips
 
 ## Removed
 
diff --git a/docs/dev/Lua API.rst b/docs/dev/Lua API.rst
index 35a604988..eeb0fbda6 100644
--- a/docs/dev/Lua API.rst	
+++ b/docs/dev/Lua API.rst	
@@ -4583,6 +4583,10 @@ There are the following predefined frame style tables:
 
   A frame suitable for overlay widget panels.
 
+* ``FRAME_THIN``
+
+  A frame suitable for floating tooltip panels that need the DFHack signature.
+
 * ``FRAME_BOLD``
 
   A frame suitable for a non-draggable panel meant to capture the user's focus,
diff --git a/library/lua/gui.lua b/library/lua/gui.lua
index 555e060d1..05d848bb3 100644
--- a/library/lua/gui.lua
+++ b/library/lua/gui.lua
@@ -940,6 +940,9 @@ end
 function FRAME_BOLD()
     return make_frame(textures.tp_border_bold, true)
 end
+function FRAME_THIN()
+    return make_frame(textures.tp_border_thin, false)
+end
 function FRAME_INTERIOR()
     local frame = make_frame(textures.tp_border_thin, false)
     frame.signature_pen = false