diff --git a/source/libs/qworker/src/qworker.c b/source/libs/qworker/src/qworker.c
index b799a72cce..8efe42e9bc 100644
--- a/source/libs/qworker/src/qworker.c
+++ b/source/libs/qworker/src/qworker.c
@@ -365,7 +365,10 @@ int32_t qwGetQueryResFromSink(QW_FPARAMS_DEF, SQWTaskCtx *ctx, int32_t *dataLen,
     pOutput->precision = output.precision;
     pOutput->bufStatus = output.bufStatus;
     pOutput->useconds = output.useconds;
-    pOutput->compressed = output.compressed;
+
+    if (output.compressed) {
+      pOutput->compressed = output.compressed;
+    }
     pOutput->numOfCols = output.numOfCols;
     pOutput->numOfRows += output.numOfRows;
     pOutput->numOfBlocks++;