diff --git a/hyperfi b/hyperfi
index 682b075..5481eb3 100644
--- a/hyperfi
+++ b/hyperfi
@@ -622,8 +622,8 @@ formatdevice(){
             ;;
         f2fs)
             fspkgs=("${fspkgs[@]} f2fs-tools")
-            echo "mkfs.f2fs $2"
-            mkfs.f2fs "${2}"
+            echo "mkfs.f2fs -f $2"
+            mkfs.f2fs -f "${2}"
             ;;
         jfs)
             fspkgs=("${fspkgs[@]} jfsutils")