diff --git a/board/netconf/rootfs/libexec/infix/prod/fdisk b/board/netconf/rootfs/libexec/infix/prod/fdisk
index 81d32f40..f0999273 100755
--- a/board/netconf/rootfs/libexec/infix/prod/fdisk
+++ b/board/netconf/rootfs/libexec/infix/prod/fdisk
@@ -8,7 +8,7 @@ bootoffs=$2
 bootsize=8M
 auxsize=8M
 
-total=$(awk -vdisk="$(basename $disk)" '$4 == disk { print($3 / 1024); }' /proc/partitions)
+total=$(awk -vdisk="$(basename $disk)" '$4 == disk { print(int($3 / 1024)); }' /proc/partitions)
 if [ "$total" -ge 4096 ]; then
     imgsize=1024M
     cfgsize=512M