diff --git a/frontend/device/input.lua b/frontend/device/input.lua
index a917456a3..73206304f 100644
--- a/frontend/device/input.lua
+++ b/frontend/device/input.lua
@@ -208,10 +208,10 @@ function Input:adjustTouchTranslate(ev, by)
     end
 end
 function Input:adjustTouchAlyssum(ev)
-	ev.time = TimeVal:now()
-	if ev.type == EV_ABS and ev.code == ABS_MT_TRACKING_ID then
-		ev.value = ev.value - 1
-	end
+    ev.time = TimeVal:now()
+    if ev.type == EV_ABS and ev.code == ABS_MT_TRACKING_ID then
+        ev.value = ev.value - 1
+    end
 end
 
 function Input:setTimeout(cb, tv_out)
diff --git a/frontend/device/kobo/device.lua b/frontend/device/kobo/device.lua
index 6c3f3e895..675d80287 100644
--- a/frontend/device/kobo/device.lua
+++ b/frontend/device/kobo/device.lua
@@ -73,8 +73,8 @@ local KoboPhoenix = Kobo:new{
 local KoboAlyssum = Kobo:new{
     model = "Kobo_alyssum",
     hasFrontlight = yes,
-	touch_phoenix_protocol = true,
-	touch_alyssum_protocol = true,
+    touch_phoenix_protocol = true,
+    touch_alyssum_protocol = true,
     display_dpi = 300,
 }
 
@@ -105,10 +105,10 @@ function Kobo:init()
             self.screen:getScreenWidth()
         )
     end
-	
-	if self.touch_alyssum_protocol then
-		self.input:registerEventAdjustHook(self.input.adjustTouchAlyssum)
-	end
+
+    if self.touch_alyssum_protocol then
+        self.input:registerEventAdjustHook(self.input.adjustTouchAlyssum)
+    end
 
     if self.touch_phoenix_protocol then
         self.input.handleTouchEv = self.input.handleTouchEvPhoenix
@@ -172,7 +172,7 @@ elseif codename == "trilogy" then
 elseif codename == "pixie" then
     return KoboPixie
 elseif codename == "alyssum" then
-	return KoboAlyssum
+    return KoboAlyssum
 else
     error("unrecognized Kobo model "..codename)
 end