diff --git a/src/tools/background-task/create-background-output.ts b/src/tools/background-task/create-background-output.ts
index a3e4931ed..446c0888e 100644
--- a/src/tools/background-task/create-background-output.ts
+++ b/src/tools/background-task/create-background-output.ts
@@ -125,7 +125,7 @@ export function createBackgroundOutput(manager: BackgroundOutputManager, client:
         const fullSessionProvided = args.full_session !== undefined
         const fullSession = fullSessionProvided
           ? (args.full_session ?? true)
-          : !isActive
+          : true
         const includeThinking = isActive || (args.include_thinking ?? false)
         const includeToolResults = isActive || (args.include_tool_results ?? false)