diff --git a/phpmatrix.php b/phpmatrix.php
index 78c4c3d..dc23279 100644
--- a/phpmatrix.php
+++ b/phpmatrix.php
@@ -17,6 +17,9 @@ class MatrixClient
     /** @var int Update period in microseconds */
     private $update_period = 1000000;
 
+    /** @var bool Enable legacy mode for matrix API */
+    private $legacy_mode_enabled = false;
+
     /**
      * @param string $matrix_server Matrix server (https://domain.tld)
      */
@@ -63,6 +66,15 @@ class MatrixClient
         $this->update_period = intval($seconds * 1000000);
     }
 
+    /**
+     * Change legacy mode
+     * @param bool $mode Enabled if true
+     */
+    public function set_legacy_mode_enabled($mode)
+    {
+        $this->legacy_mode_enabled = $mode;
+    }
+
     /**
      * Try to login to Matrix API and get an access token.
      * Will throw a MatrixRequestException if it fails
@@ -162,8 +174,14 @@ class MatrixClient
     {
         $txn_id = $this->get_new_transaction_id();
         $room_id = curl_escape($this->ch, $room_id);
-        $path =  "/_matrix/client/v3/rooms/{$room_id}/send/{$event_type}/{$txn_id}";
-        return $this->query($path, "PUT", $body);
+        if ($this->legacy_mode_enabled) {
+            $path =  "/_matrix/client/r0/rooms/{$room_id}/send/{$event_type}";
+            return $this->query($path, "POST", $body);    
+        }
+        else {
+            $path =  "/_matrix/client/v3/rooms/{$room_id}/send/{$event_type}/{$txn_id}";
+            return $this->query($path, "PUT", $body);
+        }
     }
 
     /**