diff --git a/include/common/tdataformat.h b/include/common/tdataformat.h
index e94edfcb1e..1cc226f9d7 100644
--- a/include/common/tdataformat.h
+++ b/include/common/tdataformat.h
@@ -50,9 +50,9 @@ const static uint8_t BIT2_MAP[4][4] = {{0b00000000, 0b00000001, 0b00000010, 0},
 
 #define BIT1_SIZE(n)      ((((n)-1) >> 3) + 1)
 #define BIT2_SIZE(n)      ((((n)-1) >> 2) + 1)
-#define SET_BIT1(p, i, v) ((p)[(i) >> 3] &= BIT1_MAP[(i)&7][v])
+#define SET_BIT1(p, i, v) ((p)[(i) >> 3] |= BIT1_MAP[(i)&7][v])
 #define GET_BIT1(p, i)    (((p)[(i) >> 3] >> ((i)&7)) & ((uint8_t)1))
-#define SET_BIT2(p, i, v) ((p)[(i) >> 2] &= BIT2_MAP[(i)&3][v])
+#define SET_BIT2(p, i, v) ((p)[(i) >> 2] |= BIT2_MAP[(i)&3][v])
 #define GET_BIT2(p, i)    (((p)[(i) >> 2] >> BIT2_MAP[(i)&3][3]) & ((uint8_t)3))
 
 // STSchema
diff --git a/source/dnode/vnode/src/tsdb/tsdbUtil.c b/source/dnode/vnode/src/tsdb/tsdbUtil.c
index f324124a9c..ad759f1ef8 100644
--- a/source/dnode/vnode/src/tsdb/tsdbUtil.c
+++ b/source/dnode/vnode/src/tsdb/tsdbUtil.c
@@ -928,6 +928,9 @@ int32_t tColDataAppendValue(SColData *pColData, SColVal *pColVal) {
   size = BIT2_SIZE(pColData->nVal + 1);
   code = tRealloc(&pColData->pBitMap, size);
   if (code) goto _exit;
+  if ((pColData->nVal & 3) == 0) {
+    pColData->pBitMap[pColData->nVal >> 2] = 0;
+  }
 
   // put value
   if (pColVal->isNone) {