diff --git a/WELAVerboseSecMsg.psm1 b/WELAVerboseSecMsg.psm1
index 0b3a1dc7..a887e884 100644
--- a/WELAVerboseSecMsg.psm1
+++ b/WELAVerboseSecMsg.psm1
@@ -231,10 +231,7 @@ System
     - Recommended settings: Success and Failure
 "@
 
-    # 変数展開を有効にする
-    $expandedMsg = $ExecutionContext.InvokeCommand.ExpandString($msg)
-
     # 変数部分を色付きで出力
-    $coloredMsg = $expandedMsg -replace '\$(\w+)', { param($match) "`e[31m$match`e[0m" }
+    $coloredMsg = $msg -replace '\$(\w+)', { param($match) "`e[31m$match`e[0m" }
     Write-Host $coloredMsg
 }
\ No newline at end of file