diff --git a/src/tsdb/src/tsdbRWHelper.c b/src/tsdb/src/tsdbRWHelper.c
index 901b817a4c4c1ea7b05288fa7e1e76c94b68aae1..be55c9ad0a3fe9bd3a8362b18ef0edb024fb1888 100644
--- a/src/tsdb/src/tsdbRWHelper.c
+++ b/src/tsdb/src/tsdbRWHelper.c
@@ -796,7 +796,7 @@ static int tsdbInsertSuperBlock(SRWHelper *pHelper, SCompBlock *pCompBlock, int
   ASSERT(pCompBlock->numOfSubBlocks == 1);
 
   // Adjust memory if no more room
-  if (pIdx->len == 0) pIdx->len = sizeof(SCompData) + sizeof(TSCKSUM);
+  if (pIdx->len == 0) pIdx->len = sizeof(SCompInfo) + sizeof(TSCKSUM);
   if (tsdbAdjustInfoSizeIfNeeded(pHelper, pIdx->len + sizeof(SCompInfo)) < 0) goto _err;
 
   // Change the offset