diff --git a/xpinstall/Makefile.in b/xpinstall/Makefile.in
index 6f5fedc47eb..afa66af57ba 100644
--- a/xpinstall/Makefile.in
+++ b/xpinstall/Makefile.in
@@ -32,9 +32,11 @@ include $(DEPTH)/config/autoconf.mk
 
 DIRS		= public res src stub
 
+ifeq ($(OS_ARCH),Linux))
 ifdef MOZ_ENABLE_GTK
 DIRS		+= wizard/unix/src2
 endif
+endif
 
 include $(topsrcdir)/config/rules.mk