diff --git a/changelog.txt b/changelog.txt
index 833382a..ea4bef2 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,8 @@
+---------------------------------------------------------------------------------------------------
+Version: 3.3.2
+  Bugfixes:
+    - Fixed on_entity_died group could be invalid
+
 ---------------------------------------------------------------------------------------------------
 Version: 3.3.1
   Tweaks:
diff --git a/control.lua b/control.lua
index e4cef04..b76bde9 100644
--- a/control.lua
+++ b/control.lua
@@ -455,7 +455,7 @@ local function onDeath(event)
             end
         else
             local group = entity.unit_group
-            if group then
+            if group and group.valid then
                 squad = Universe.groupNumberToSquad[group.group_number]
                 if squad then
                     decompressSquad(squad, tick)
diff --git a/info.json b/info.json
index b189c28..0dbbb24 100644
--- a/info.json
+++ b/info.json
@@ -1,7 +1,7 @@
 {
     "name" : "Rampant",
     "factorio_version" : "1.1",
-    "version" : "3.3.1",
+    "version" : "3.3.2",
     "title" : "Rampant",
     "author" : "Veden",
     "homepage" : "https://forums.factorio.com/viewtopic.php?f=94&t=31445",