diff --git a/config b/config
index ffdd134..ac23396 100644
--- a/config
+++ b/config
@@ -5,6 +5,9 @@
 # debug mode
 #debug=1
 
+# custom kernel version
+#kernel=""
+
 # parse fstab
 #use_fstab=0
 
diff --git a/generate b/generate
index 581f592..2bd1ba6 100755
--- a/generate
+++ b/generate
@@ -413,7 +413,7 @@ check_currentdir
 
 # variables
 tmpdir="$(create_tmpdir)" || msg panic "failed to create working directory"
-kernel="$(uname -r)"
+kernel="${kernel:-$(uname -r)}"
 moddir="/lib/modules"
 modker="${moddir}/${kernel}"