diff --git a/frontend/apps/reader/modules/readerscreenshot.lua b/frontend/apps/reader/modules/readerscreenshot.lua
index 8fad7d925..f1871eb87 100644
--- a/frontend/apps/reader/modules/readerscreenshot.lua
+++ b/frontend/apps/reader/modules/readerscreenshot.lua
@@ -8,7 +8,7 @@ local _ = require("gettext")
 local DEBUG = require("dbg")
 
 local ReaderScreenshot = InputContainer:new{
-    datetime_name = "screenshots/Screenshot_%Y-%b-%d_%Hh%M.png",
+    datetime_name = "screenshots/Screenshot_%Y-%b-%d_%H%M%S.png",
 }
 
 function ReaderScreenshot:init()