diff --git a/Makefile b/Makefile
index 02e8f1708..8ce31e378 100644
--- a/Makefile
+++ b/Makefile
@@ -103,4 +103,4 @@ thirdparty: $(MUPDFLIBS) $(THIRDPARTYLIBS) $(LUALIBS)
 
 install:
 	# install to kindle using USB networking
-	scp kpdfview reader.lua alt_getopt.lua root@192.168.2.2:/mnt/us/test/
+	scp kpdfview reader.lua alt_getopt.lua keys.lua tilecache.lua root@192.168.2.2:/mnt/us/test/
diff --git a/keys.lua b/keys.lua
index f5c5acc37..afb7dbd2f 100755
--- a/keys.lua
+++ b/keys.lua
@@ -119,4 +119,6 @@ function set_emu_keycodes()
 	KEY_S = 39
 	KEY_D = 40
 	KEY_SHIFT = 50
+	KEY_VPLUS = 95  -- F11
+	KEY_VMINUS = 96 -- F12
 end
diff --git a/reader.lua b/reader.lua
index da1812402..9131552cc 100755
--- a/reader.lua
+++ b/reader.lua
@@ -229,9 +229,9 @@ function mainloop()
 				end
 			elseif ev.code == KEY_BACK then
 				return
-			elseif ev.code == KEY_FW_UP then
+			elseif ev.code == KEY_VPLUS then
 				modify_gamma( 1.25 )
-			elseif ev.code == KEY_FW_DOWN then
+			elseif ev.code == KEY_VMINUS then
 				modify_gamma( 0.8 )
 			elseif ev.code == KEY_A then
 				if shiftmode then