diff --git a/DragonECS.csproj b/DragonECS.csproj
index 129c906..7a5a4c7 100644
--- a/DragonECS.csproj
+++ b/DragonECS.csproj
@@ -10,7 +10,7 @@
         <RootNamespace>DCFApixels.DragonECS</RootNamespace>
 
         <Title>DragonECS</Title>
-        <Version>0.8.39</Version>
+        <Version>0.8.40</Version>
         <Authors>DCFApixels</Authors>
         <Description>ECS Framework for Game Engines with C# and .Net Platform</Description>
         <Copyright>DCFApixels</Copyright>
diff --git a/package.json b/package.json
index b811349..9e09780 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "displayName": "DragonECS",
     "description": "C# Entity Component System Framework",
     "unity": "2020.3",
-    "version": "0.8.39",
+    "version": "0.8.40",
     "repository": {
         "type": "git",
         "url": "https://github.com/DCFApixels/DragonECS.git"
diff --git a/src/EcsWorld.cs b/src/EcsWorld.cs
index 8e63f57..515a0fd 100644
--- a/src/EcsWorld.cs
+++ b/src/EcsWorld.cs
@@ -553,9 +553,12 @@ namespace DCFApixels.DragonECS
             }
             for (int i = 0; i < _groups.Count; i++)
             {
-                if (_groups[i].TryGetTarget(out EcsGroup group) && group.IsReleased)
+                if (_groups[i].TryGetTarget(out EcsGroup group))
                 {
-                    group.OnReleaseDelEntityBuffer_Internal(buffer);
+                    if(group.IsReleased)
+                    {
+                        group.OnReleaseDelEntityBuffer_Internal(buffer);
+                    }
                 }
                 else
                 {