diff --git a/builtin/mainmenu/common.lua b/builtin/mainmenu/common.lua
index 8db8bb8d1..dcccb2b2a 100644
--- a/builtin/mainmenu/common.lua
+++ b/builtin/mainmenu/common.lua
@@ -242,3 +242,11 @@ function menu_worldmt_legacy(selected)
 		end
 	end
 end
+
+function confirmation_formspec(message, confirm_id, confirm_label, cancel_id, cancel_label)
+	return "size[10,2.5,true]" ..
+			"label[0.5,0.5;" .. message .. "]" ..
+			"style[" .. confirm_id .. ";bgcolor=red]" ..
+			"button[0.5,1.5;2.5,0.5;" .. confirm_id .. ";" .. confirm_label .. "]" ..
+			"button[7.0,1.5;2.5,0.5;" .. cancel_id .. ";" .. cancel_label .. "]"
+end
diff --git a/builtin/mainmenu/dlg_contentstore.lua b/builtin/mainmenu/dlg_contentstore.lua
index 16ab1c3a7..11eaceac3 100644
--- a/builtin/mainmenu/dlg_contentstore.lua
+++ b/builtin/mainmenu/dlg_contentstore.lua
@@ -488,12 +488,10 @@ local confirm_overwrite = {}
 function confirm_overwrite.get_formspec()
 	local package = confirm_overwrite.package
 
-	return "size[11.5,4.5,true]" ..
-			"label[2,2;" ..
-			fgettext("\"$1\" already exists. Would you like to overwrite it?", package.name) .. "]"..
-			"style[install;bgcolor=red]" ..
-			"button[3.25,3.5;2.5,0.5;install;" .. fgettext("Overwrite") .. "]" ..
-			"button[5.75,3.5;2.5,0.5;cancel;" .. fgettext("Cancel") .. "]"
+	return confirmation_formspec(
+		fgettext("\"$1\" already exists. Would you like to overwrite it?", package.name),
+		'install', fgettext("Overwrite"),
+		'cancel', fgettext("Cancel"))
 end
 
 function confirm_overwrite.handle_submit(this, fields)
diff --git a/builtin/mainmenu/dlg_delete_content.lua b/builtin/mainmenu/dlg_delete_content.lua
index a24171541..4463825f7 100644
--- a/builtin/mainmenu/dlg_delete_content.lua
+++ b/builtin/mainmenu/dlg_delete_content.lua
@@ -18,15 +18,10 @@
 --------------------------------------------------------------------------------
 
 local function delete_content_formspec(dialogdata)
-	local retval =
-		"size[11.5,4.5,true]" ..
-		"label[2,2;" ..
-		fgettext("Are you sure you want to delete \"$1\"?", dialogdata.content.name) .. "]"..
-		"style[dlg_delete_content_confirm;bgcolor=red]" ..
-		"button[3.25,3.5;2.5,0.5;dlg_delete_content_confirm;" .. fgettext("Delete") .. "]" ..
-		"button[5.75,3.5;2.5,0.5;dlg_delete_content_cancel;" .. fgettext("Cancel") .. "]"
-
-	return retval
+	return confirmation_formspec(
+		fgettext("Are you sure you want to delete \"$1\"?", dialogdata.content.name),
+		'dlg_delete_content_confirm', fgettext("Delete"),
+		'dlg_delete_content_cancel', fgettext("Cancel"))
 end
 
 --------------------------------------------------------------------------------
diff --git a/builtin/mainmenu/dlg_delete_world.lua b/builtin/mainmenu/dlg_delete_world.lua
index 33e7bc945..67c0612bd 100644
--- a/builtin/mainmenu/dlg_delete_world.lua
+++ b/builtin/mainmenu/dlg_delete_world.lua
@@ -17,14 +17,10 @@
 
 
 local function delete_world_formspec(dialogdata)
-	local retval =
-		"size[10,2.5,true]" ..
-		"label[0.5,0.5;" ..
-		fgettext("Delete World \"$1\"?", dialogdata.delete_name) .. "]" ..
-		"style[world_delete_confirm;bgcolor=red]" ..
-		"button[0.5,1.5;2.5,0.5;world_delete_confirm;" .. fgettext("Delete") .. "]" ..
-		"button[7.0,1.5;2.5,0.5;world_delete_cancel;" .. fgettext("Cancel") .. "]"
-	return retval
+	return confirmation_formspec(
+		fgettext("Delete World \"$1\"?", dialogdata.delete_name),
+		'world_delete_confirm', fgettext("Delete"),
+		'world_delete_cancel', fgettext("Cancel"))
 end
 
 local function delete_world_buttonhandler(this, fields)