diff --git a/rs/canister_sandbox/src/replica_controller/sandboxed_execution_controller.rs b/rs/canister_sandbox/src/replica_controller/sandboxed_execution_controller.rs
index a0173756d5d5..9a38cdc3d9e7 100644
--- a/rs/canister_sandbox/src/replica_controller/sandboxed_execution_controller.rs
+++ b/rs/canister_sandbox/src/replica_controller/sandboxed_execution_controller.rs
@@ -1825,7 +1825,7 @@ pub fn panic_due_to_exit(output: ExitStatus, pid: u32) {
             pid, code
         ),
         None => panic!(
-            "Error from launcher process, pid {} exited due to signal!",
+            "Error from launcher process, pid {} exited due to signal! In test environments (e.g., PocketIC), you can safely ignore this message.",
             pid
         ),
     }