diff --git a/mozilla/editor/base/makefile.win b/mozilla/editor/base/makefile.win
index 63a2c4411d5..ccfc810299f 100644
--- a/mozilla/editor/base/makefile.win
+++ b/mozilla/editor/base/makefile.win
@@ -102,7 +102,7 @@ CPP_OBJS =					\
 
 MODULE=editor 
 
-REQUIRES=xpcom raptor dom base netlib
+REQUIRES=xpcom raptor dom base netlib pref
 
 LINCS=-I$(PUBLIC)\editor \
     -I$(PUBLIC)\xpcom \