diff --git a/mozilla/accessible/src/mac/Makefile.in b/mozilla/accessible/src/mac/Makefile.in
index 2907baa3d12..3791de94028 100644
--- a/mozilla/accessible/src/mac/Makefile.in
+++ b/mozilla/accessible/src/mac/Makefile.in
@@ -53,6 +53,7 @@ REQUIRES	= content \
 		  view \
 		  widget \
 		  xpcom \
+		  necko \
 		  $(NULL)
 
 CPPSRCS = \