src/Routing/ReadOnlyModeMethodFilter.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Routing/ReadOnlyModeMethodFilter.php b/src/Routing/ReadOnlyModeMethodFilter.php
index d788a79..9263cbb 100644
--- a/src/Routing/ReadOnlyModeMethodFilter.php
+++ b/src/Routing/ReadOnlyModeMethodFilter.php
@@ -51,9 +51,12 @@ class ReadOnlyModeMethodFilter implements FilterInterface {
       return $collection;
     }
 
+    $read_only_methods = ['GET', 'HEAD', 'OPTIONS', 'TRACE'];
     $all_supported_methods = [];
     foreach ($collection->all() as $name => $route) {
-      if ($route->hasDefault(Routes::JSON_API_ROUTE_FLAG_KEY) && !empty(array_diff($route->getMethods(), ['GET', 'HEAD', 'OPTIONS', 'TRACE']))) {
+      $is_jsonapi_route = $route->hasDefault(Routes::JSON_API_ROUTE_FLAG_KEY);
+      $is_read_only_route = !empty(array_diff($route->getMethods(), $read_only_methods));
+      if ($is_jsonapi_route && $is_read_only_route) {
         $collection->remove($name);
       }
     }