diff --git a/xpinstall/Makefile.in b/xpinstall/Makefile.in
index c552df397933..19ccc4be44c8 100644
--- a/xpinstall/Makefile.in
+++ b/xpinstall/Makefile.in
@@ -50,8 +50,8 @@ include $(DEPTH)/config/autoconf.mk
 MODULE		= xpinstall
 DIRS		= public src
 
-ifdef ENABLE_TESTS
-DIRS += tests
-endif
+#ifdef ENABLE_TESTS
+#DIRS += tests
+#endif
 
 include $(topsrcdir)/config/rules.mk