diff --git a/A-gent.cabal b/A-gent.cabal
--- a/A-gent.cabal
+++ b/A-gent.cabal
@@ -9,7 +9,7 @@
 build-type: Simple
                                               
 name: A-gent
-version: 0.11.0.20
+version: 0.11.0.21
 
 synopsis: Polite & well educated LLM agent with excellent manners that always behaves well
 description: Polite and well educated LLM agent with excellent manners that always behaves well
diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Revision history for Λ-gent
 
+## 0.11.0.21 -- 2026-10-22
+
+* String replace went wrong `LLM_HSOM_LOCALHOST_SOM` -> `LLM_HONE_LOCALHOST_SOM`.
+
 ## 0.11.0.20 -- 2026-10-21
 
 * Added [Cabal-plan][cabal-plan] info and topology for the project to help deal
diff --git a/src/Internal/RIO.hs b/src/Internal/RIO.hs
--- a/src/Internal/RIO.hs
+++ b/src/Internal/RIO.hs
@@ -2218,7 +2218,7 @@
   )
   => LlmHoneConf RIO
   where
-    llmHoneSOM = getEnvVar "LLM_HSOM_LOCALHOST_SOM"
+    llmHoneSOM = getEnvVar "LLM_HONE_LOCALHOST_SOM"
     llmHoneKey = pure Nothing
 
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