diff --git a/tsk/auto/auto_db.cpp b/tsk/auto/auto_db.cpp
index a70fafa0d8979f644ad4a177aa693c885997c4d9..3bf7b98b57767dfb19ca6ceef321ceeb5192873f 100644
--- a/tsk/auto/auto_db.cpp
+++ b/tsk/auto/auto_db.cpp
@@ -1010,7 +1010,6 @@ TSK_RETVAL_ENUM TskAutoDb::addFsInfoUnalloc(const TSK_DB_FS_INFO & dbFsInfo) {
     const uint64_t byteStart = unallocBlockWlkTrack.curRangeStart * fsInfo->block_size + fsInfo->offset;
     const uint64_t byteLen = (1 + unallocBlockWlkTrack.prevBlock - unallocBlockWlkTrack.curRangeStart) * fsInfo->block_size;
     unallocBlockWlkTrack.ranges.push_back(TSK_DB_FILE_LAYOUT_RANGE(byteStart, byteLen, unallocBlockWlkTrack.nextSequenceNo++));
-    unallocBlockWlkTrack.size += byteLen;
     int64_t fileObjId = 0;
 
     if (m_db->addUnallocBlockFile(m_curUnallocDirId, dbFsInfo.objId, unallocBlockWlkTrack.size, unallocBlockWlkTrack.ranges, fileObjId, m_curImgId) == TSK_ERR) {