diff --git a/mozilla/xpfe/components/build/Makefile.in b/mozilla/xpfe/components/build/Makefile.in
index 33641375dd2..669823c9af8 100644
--- a/mozilla/xpfe/components/build/Makefile.in
+++ b/mozilla/xpfe/components/build/Makefile.in
@@ -54,6 +54,7 @@ REQUIRES	= xpcom \
 		  webshell \
 		  appshell \
 		  history \
+		  windowwatcher \
 		  $(NULL)
 
 CPPSRCS		= nsModule.cpp
diff --git a/mozilla/xpfe/components/build/makefile.win b/mozilla/xpfe/components/build/makefile.win
index efa876452a6..54533663d08 100644
--- a/mozilla/xpfe/components/build/makefile.win
+++ b/mozilla/xpfe/components/build/makefile.win
@@ -52,6 +52,7 @@ REQUIRES	= xpcom \
 		  mozldap \
 		  webbrowserpersist \
 		  appshell \
+		  windowwatcher \
 		  $(NULL)
 
 LCFLAGS = -DWIN32_LEAN_AND_MEAN