diff --git a/modules/voipcall/voipcall.module b/modules/voipcall/voipcall.module
index f74ab4b..4543dc3 100644
--- a/modules/voipcall/voipcall.module
+++ b/modules/voipcall/voipcall.module
@@ -951,7 +951,7 @@ class mp3file
   public static function is_mpeg10(&$mp3)  { return ($mp3['MPEG version']=='11'); }
   public static function is_mpeg20(&$mp3)  { return ($mp3['MPEG version']=='10'); }
   public static function is_mpeg25(&$mp3)  { return ($mp3['MPEG version']=='00'); }
-  public static function is_mpeg20or25(&$mp3)  { return ($mp3['MPEG version']{1}=='0'); }
+  public static function is_mpeg20or25(&$mp3)  { return ($mp3['MPEG version'][1]=='0'); }
   //-----------------------------------------------------------------------------
   public static function bitratelookup(&$mp3)
   {