diff --git a/mailnews/compose/public/MsgCompGlue.h b/mailnews/compose/public/MsgCompGlue.h
index ed1b2e382cd4..52d0a5748a14 100644
--- a/mailnews/compose/public/MsgCompGlue.h
+++ b/mailnews/compose/public/MsgCompGlue.h
@@ -312,8 +312,6 @@ const int kMaxFullNameLength 			= 256;
 
 extern char *msg_MagicFolderName(MSG_Prefs* prefs, uint32 flag, int *pStatus);
 
-#define	kIsRead			0x00000001
-
 #define MIME_MakeFromField(a)  PL_strdup("testmsg@netscape.com")
 
 #define DRAFTS_FOLDER_NAME  "Draft"