diff --git a/main.lua b/main.lua
index ca8746f..d346ba4 100644
--- a/main.lua
+++ b/main.lua
@@ -1,48 +1,53 @@
 --- @since 25.2.7
 
 local function info(content)
-	return ya.notify {
-		title = "Gpg information",
-		content = content,
-		timeout = 5,
-	}
+    return ya.notify {
+        title = "Gpg information",
+        content = content,
+        timeout = 5,
+    }
 end
 
 local hovered_url = ya.sync(function()
-	local h = cx.active.current.hovered
-	return h and h.url
+    local h = cx.active.current.hovered
+    return h and h.url
 end)
 
 local get_state_attr = ya.sync(function(state, attr)
-  return state[attr]
+    return state[attr]
 end)
 
 return {
-	setup = function(state, options)
-		state.delete_after = options.delete_after or true
-		state.default_recipient = options.default_recipient
-	end,
-	entry = function()
-		local delete_after, default_recipient = get_state_attr("delete_after"), get_state_attr("default_recipient")
-		local hovered = tostring(hovered_url())
-		if not hovered then
-			return info("No file selected")
-		end
+    setup = function(state, options)
+        state.delete_after = options.delete_after or true
+        state.default_recipient = options.default_recipient
+    end,
+    entry = function()
+        local delete_after, default_recipient = get_state_attr("delete_after"), get_state_attr("default_recipient")
+        local hovered = tostring(hovered_url())
+        if not hovered then
+            return info("No file selected")
+        end
 
-		if not default_recipient then
-			return info("No recipient set")
-		end
+        if hovered:match("%.gpg$") then
+            return info("This file is already encrypted")
+        end
 
-		local _, err = Command("gpg"):arg("--yes"):arg("--recipient"):arg(default_recipient):arg("--output"):arg(hovered .. ".gpg"):arg("--encrypt"):arg(hovered):output()
-		if err then
-			return info("Failed to gpg with error: " .. err)
-		end
+        if not default_recipient then
+            return info("No recipient set")
+        end
 
-		-- Delete the plain file
-		if delete_after == true then
-			os.remove(hovered)
-		end
+        local _, err = Command("gpg"):arg("--yes"):arg("--recipient"):arg(default_recipient):arg("--output"):arg(hovered ..
+        ".gpg"):arg("--encrypt"):arg(hovered):output()
+        if err then
+            return info("Failed to gpg with error: " .. err)
+        end
 
-		info("Done encrypting the file! The plain one is deleted now.")
-	end,
+        -- Delete the plain file
+        if delete_after == true then
+            os.remove(hovered)
+        end
+
+        info("Done encrypting the file! The plain one is deleted now.")
+    end,
 }