diff --git a/pentadactylrc b/pentadactylrc
index 15864eb..8b93e64 100644
--- a/pentadactylrc
+++ b/pentadactylrc
@@ -13,8 +13,8 @@ js dactyl.beep = function() { return false; }
 set hlfind incfind
 
 " fast scrolling
-map -builtin J <C-f>
-map -builtin K <C-b>
+map -builtin j 5j
+map -builtin k 5k
 
 set passkeys+=reader.gebner.org:u<C-Up><C-Down><Up><Down>,fr