diff --git a/xpfe/components/build/Makefile.in b/xpfe/components/build/Makefile.in
index 6a4232a8794a..faa430f04945 100644
--- a/xpfe/components/build/Makefile.in
+++ b/xpfe/components/build/Makefile.in
@@ -43,6 +43,7 @@ REQUIRES	= xpcom \
 		  mork \
 		  widget \
 		  dom \
+		  downloadmanager \
 		  pref \
 		  docshell \
 		  webshell \