diff --git a/lua/fzf-lua/defaults.lua b/lua/fzf-lua/defaults.lua
index 94ae846f..848b2441 100644
--- a/lua/fzf-lua/defaults.lua
+++ b/lua/fzf-lua/defaults.lua
@@ -68,30 +68,33 @@ M.defaults                      = {
   },
   keymap        = {
     builtin = {
-      ["<F1>"]     = "toggle-help",
-      ["<F2>"]     = "toggle-fullscreen",
+      ["<F1>"]       = "toggle-help",
+      ["<F2>"]       = "toggle-fullscreen",
       -- Only valid with the 'builtin' previewer
-      ["<F3>"]     = "toggle-preview-wrap",
-      ["<F4>"]     = "toggle-preview",
-      ["<F5>"]     = "toggle-preview-ccw",
-      ["<F6>"]     = "toggle-preview-cw",
-      ["<S-down>"] = "preview-page-down",
-      ["<S-up>"]   = "preview-page-up",
-      ["<S-left>"] = "preview-page-reset",
+      ["<F3>"]       = "toggle-preview-wrap",
+      ["<F4>"]       = "toggle-preview",
+      ["<F5>"]       = "toggle-preview-ccw",
+      ["<F6>"]       = "toggle-preview-cw",
+      ["<S-down>"]   = "preview-page-down",
+      ["<S-up>"]     = "preview-page-up",
+      ["<M-S-down>"] = "preview-down",
+      ["<M-S-up>"]   = "preview-up",
     },
     fzf = {
-      ["ctrl-z"]     = "abort",
-      ["ctrl-u"]     = "unix-line-discard",
-      ["ctrl-f"]     = "half-page-down",
-      ["ctrl-b"]     = "half-page-up",
-      ["ctrl-a"]     = "beginning-of-line",
-      ["ctrl-e"]     = "end-of-line",
-      ["alt-a"]      = "toggle-all",
+      ["ctrl-z"]         = "abort",
+      ["ctrl-u"]         = "unix-line-discard",
+      ["ctrl-f"]         = "half-page-down",
+      ["ctrl-b"]         = "half-page-up",
+      ["ctrl-a"]         = "beginning-of-line",
+      ["ctrl-e"]         = "end-of-line",
+      ["alt-a"]          = "toggle-all",
       -- Only valid with fzf previewers (bat/cat/git/etc)
-      ["f3"]         = "toggle-preview-wrap",
-      ["f4"]         = "toggle-preview",
-      ["shift-down"] = "preview-page-down",
-      ["shift-up"]   = "preview-page-up",
+      ["f3"]             = "toggle-preview-wrap",
+      ["f4"]             = "toggle-preview",
+      ["shift-down"]     = "preview-page-down",
+      ["shift-up"]       = "preview-page-up",
+      ["alt-shift-down"] = "preview-down",
+      ["alt-shift-up"]   = "preview-up",
     },
   },
   actions       = {