diff --git a/tools/release.sh b/tools/release.sh
index 30bef0575..0a12ed4e3 100755
--- a/tools/release.sh
+++ b/tools/release.sh
@@ -92,7 +92,7 @@ do
 done
 
 ISO=${ISO}.iso
-ISOBZ=${ISO}.bz
+ISOBZ=${ISO}.bz2
 echo "Making $ISOBZ"
 
 USRMB=100