diff --git a/mozilla/embedding/Makefile.in b/mozilla/embedding/Makefile.in
index 8025f570a35..30b03e4fa2a 100644
--- a/mozilla/embedding/Makefile.in
+++ b/mozilla/embedding/Makefile.in
@@ -25,6 +25,10 @@ VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS = base browser tests/gtkEmbed
+DIRS = base browser
+
+ifdef MOZ_ENABLE_GTK
+DIRS += tests/gtkEmbed
+endif
 
 include $(topsrcdir)/config/rules.mk