diff --git a/scripts/generate-kernel-patch b/scripts/generate-kernel-patch
index b6f3544e1..cc176cb69 100755
--- a/scripts/generate-kernel-patch
+++ b/scripts/generate-kernel-patch
@@ -458,8 +458,9 @@ if [ "${include_fcst}" = true ]; then
       done
   fi
 
-  add_file "fcst/Kbuild" \
-           "drivers/scst/fcst/Makefile"
+  for f in fcst/Kbuild fcst/Makefile_in-tree; do
+    [ -e "$f" ] && add_file "$f" "drivers/scst/fcst/Makefile"
+  done
 
   add_file "fcst/Kconfig" "drivers/scst/fcst/Kconfig"