diff --git a/src/main/scala/yaooqinn/kyuubi/operation/KyuubiOperation.scala b/src/main/scala/yaooqinn/kyuubi/operation/KyuubiOperation.scala
index b89078d2b..182eeecf7 100644
--- a/src/main/scala/yaooqinn/kyuubi/operation/KyuubiOperation.scala
+++ b/src/main/scala/yaooqinn/kyuubi/operation/KyuubiOperation.scala
@@ -286,7 +286,7 @@ class KyuubiOperation(session: KyuubiSession, statement: String) extends Logging
     } catch {
       case rejected: RejectedExecutionException =>
         setState(ERROR)
-        throw new KyuubiSQLException("The background thread pool can not accept" +
+        throw new KyuubiSQLException("The background threadpool cannot accept" +
           " new task for execution, please retry the operation", rejected)
       case NonFatal(e) =>
         error(s"Error executing query in background", e)