diff --git a/src/common/filename.cpp b/src/common/filename.cpp
index 50329cd23a..a288d75c78 100644
--- a/src/common/filename.cpp
+++ b/src/common/filename.cpp
@@ -1998,7 +1998,7 @@ public :
   MacDefaultExtensionRecord()
   {
     m_ext[0] = 0 ;
-    m_type = m_creator = NULL ;
+    m_type = m_creator = 0 ;
   }
   MacDefaultExtensionRecord( const MacDefaultExtensionRecord& from )
   {