diff --git a/apps/monolithic_userboot/features.txt b/apps/monolithic_userboot/features.txt
index 2cc1ea8..ff6f69c 100644
--- a/apps/monolithic_userboot/features.txt
+++ b/apps/monolithic_userboot/features.txt
@@ -1,2 +1 @@
-img
 monolithic
diff --git a/build_img.sh b/build_img.sh
index e422291..c42185d 100755
--- a/build_img.sh
+++ b/build_img.sh
@@ -68,7 +68,7 @@ if [ ! -d "./testcases/$FILE" ]; then
 fi
 
 rm -f disk.img
-dd if=/dev/zero of=disk.img bs=4M count=30
+dd if=/dev/zero of=disk.img bs=4M count=1024
 
 if [ "$fs" = "ext4" ]; then
 	mkfs.ext4 -t ext4 disk.img