diff --git a/libk9copy/k9dvdbackup.cpp b/libk9copy/k9dvdbackup.cpp
index 83c04a6..e560a1d 100755
--- a/libk9copy/k9dvdbackup.cpp
+++ b/libk9copy/k9dvdbackup.cpp
@@ -883,7 +883,7 @@ k9Vobu * k9DVDBackup::remapOffset(uint32_t _sector,uint32_t *_offset,int _dir) {
 
 
         if ((vobu1 !=NULL) && (vobu2!=NULL)) {
-            *_offset = abs(vobu1->newSector - vobu2->newSector)  | maskOffset1 ;
+            *_offset = labs(vobu1->newSector - vobu2->newSector)  | maskOffset1 ;
             *_offset |= maskOffset2;
             return vobu2;
         }