diff --git a/lib/Properties.hs b/lib/Properties.hs
index 1b6cab8aa05857510f0c8f50631aa33eca453d90..6d7e03ce4037c6062442217e07ea68d5deadf24c 100644
--- a/lib/Properties.hs
+++ b/lib/Properties.hs
@@ -236,7 +236,6 @@ checkObjectProperty p@(Property name _) = do
       (const $ forbid "using \"url\" to open local html files is disallowed.")
     unless (objectType obj == "website")
       $ complain "\"url\" can only be set for objects of type \"website\""
-  "allowApi" -> forbidProperty name
   "getBadge" -> do
     when (1 /= length (getProperties obj))
       $ warn "Objects with the property \"getBadge\" set are removed at runtime, \
@@ -291,6 +290,8 @@ checkObjectProperty p@(Property name _) = do
             suggestPropertyName' "door"
             suggestPropertyName "soundRadius"
               "set \"soundRadius\" to limit the door sound to a certain area."
+    | T.toLower name `elem` [ "allowapi" ]
+      -> forbidProperty name
     | otherwise ->
         warn $ "unknown object property " <> prettyprint name <> "."
 
@@ -324,11 +325,6 @@ checkTileLayerProperty p@(Property name _value) = case name of
     "jitsiTriggerMessage" -> do
       isString p
       requireProperty "jitsiTrigger"
-    "jitsiUrl" -> isForbidden
-    "jitsiConfig" -> isForbidden
-    "jitsiClientConfig" -> isForbidden
-    "jitsiRoomAdminTag" -> isForbidden
-    "jitsiInterfaceConfig" -> isForbidden
     "jitsiWidth" ->
       isIntInRange 0 100 p
     "bbbRoom" -> do
@@ -391,14 +387,11 @@ checkTileLayerProperty p@(Property name _value) = case name of
     "openWebsiteTriggerMessage" -> do
       isString p
       requireProperty "openWebsiteTrigger"
-    "openWebsitePolicy" -> isForbidden
-    "openWebsiteAllowApi" -> isForbidden
     "openTab" -> do
       isString p
       requireProperty "openWebsite"
     "url" -> complain "the property \"url\" defining embedded iframes must be \
                       \set on an object in an objectgroup layer."
-    "allowApi" -> isForbidden
     "exitUrl" -> do
       forbidEmptyLayer
       unwrapURI (Proxy @"map") p
@@ -453,10 +446,14 @@ checkTileLayerProperty p@(Property name _value) = case name of
         -> do { isString p; requireProperty "bellVariable" }
       | name `elem` [ "enterValue", "leaveValue" ]
         -> do { isString p; requireProperty "bindVariable" }
+      | T.toLower name `elem` [ "jitsiurl", "jitsiconfig", "jitsiclientconfig"
+                              , "jitsiroomadmintag", "jitsiinterfaceconfig"
+                              , "openwebsitepolicy", "openwebsiteallowapi"
+                              , "allowapi" ]
+        -> forbidProperty name
       | otherwise ->
         warn $ "unknown property type " <> prettyprint name
     where
-      isForbidden = forbidProperty name
       requireProperty req = propertyRequiredBy req name
       isUnsupported = warn $ "property " <> name <> " is not (yet) supported by walint."
       deprecatedUseInstead instead =