diff --git a/NEWS b/NEWS
index 27d31d532..a98e7e4fd 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,7 @@ DFHack Future
     Internals
         Lua scripts will only be reloaded if necessary and will delete their old globals if the file was changed.
     Fixes
+        Gave add-thought a proper subthought arg.
     New Plugins
     New Scripts
         modtools/reaction-product-trigger: triggers callbacks when products are produced (contrast with when reactions complete)
diff --git a/scripts/add-thought.lua b/scripts/add-thought.lua
index 2bd648edd..3739f85c7 100644
--- a/scripts/add-thought.lua
+++ b/scripts/add-thought.lua
@@ -30,6 +30,7 @@ validArgs = validArgs or utils.invert({
  'emotion',
  'severity',
  'strength',
+ 'subthought',
  'gui'
 })