diff --git a/src/tm_mad/nfs/tm_mkimage.sh b/src/tm_mad/nfs/tm_mkimage.sh
index d2e5c61150..8dd7a18b24 100755
--- a/src/tm_mad/nfs/tm_mkimage.sh
+++ b/src/tm_mad/nfs/tm_mkimage.sh
@@ -34,6 +34,6 @@ DST_DIR=`dirname $DST_PATH`
 
 exec_and_log "mkdir -p $DST_DIR"
 exec_and_log "dd if=/dev/zero of=$DST_PATH bs=1 count=1 seek=${SIZE}M"
-exec_and_log "mkfs -t $FSTYPE $DST_PATH"
+exec_and_log "mkfs -t $FSTYPE -F $DST_PATH"
 exec_and_log "chmod a+rw $DST_PATH"
 
diff --git a/src/tm_mad/ssh/tm_mkimage.sh b/src/tm_mad/ssh/tm_mkimage.sh
index f570147bc8..7e47671148 100755
--- a/src/tm_mad/ssh/tm_mkimage.sh
+++ b/src/tm_mad/ssh/tm_mkimage.sh
@@ -35,5 +35,5 @@ DST_DIR=`dirname $DST_PATH`
 
 exec_and_log "ssh $DST_HOST mkdir -p $DST_DIR"
 exec_and_log "ssh $DST_HOST dd if=/dev/zero of=$DST_PATH bs=1 count=1 seek=${SIZE}M"
-exec_and_log "ssh $DST_HOST mkfs -t $FSTYPE $DST_PATH"
+exec_and_log "ssh $DST_HOST mkfs -t $FSTYPE -F $DST_PATH"
 exec_and_log "ssh $DST_HOST chmod a+rw $DST_PATH"