diff --git a/mailnews/imap/src/makefile.win b/mailnews/imap/src/makefile.win
index d20da1dabf79..355232ee091f 100644
--- a/mailnews/imap/src/makefile.win
+++ b/mailnews/imap/src/makefile.win
@@ -80,6 +80,7 @@ LINCS=													\
 		-I$(PUBLIC)\raptor								\
 		-I$(PUBLIC)\netlib								\
 		-I$(PUBLIC)\pref								\
+		-I$(PUBLIC)\mime								\
 		 $(NULL)
 
 LCFLAGS =		   \