diff --git a/source/common/src/tdatablock.c b/source/common/src/tdatablock.c
index c253e842d6..2832e6d16e 100644
--- a/source/common/src/tdatablock.c
+++ b/source/common/src/tdatablock.c
@@ -1191,7 +1191,6 @@ static int32_t doEnsureCapacity(SColumnInfoData* pColumn, const SDataBlockInfo*
     int32_t oldLen = BitmapLen(existedRows);
     pColumn->nullbitmap = tmp;
     memset(&pColumn->nullbitmap[oldLen], 0, BitmapLen(numOfRows) - oldLen);
-
     ASSERT(pColumn->info.bytes);
 
     // make sure the allocated memory is MALLOC_ALIGN_BYTES aligned
@@ -1207,6 +1206,8 @@ static int32_t doEnsureCapacity(SColumnInfoData* pColumn, const SDataBlockInfo*
     }
 
     pColumn->pData = tmp;
+    ASSERT((((uint64_t)pColumn->pData) & (MALLOC_ALIGN_BYTES - 1)) == 0x0);
+
     if (clearPayload) {
       memset(tmp + pColumn->info.bytes * existedRows, 0, pColumn->info.bytes * (numOfRows - existedRows));
     }
diff --git a/source/os/src/osMemory.c b/source/os/src/osMemory.c
index b2d1dcf58e..230ca5b968 100644
--- a/source/os/src/osMemory.c
+++ b/source/os/src/osMemory.c
@@ -352,8 +352,6 @@ void* taosMemoryMallocAlign(uint32_t alignment, int64_t size) {
 #else
 #if defined(LINUX)
   void* p = memalign(alignment, size);
-  ASSERT((((uint64_t)p) & (alignment - 1)) == 0x0);
-
   return p;
 #else
   return taosMemoryMalloc(size);