diff --git a/stdlib/.depend b/stdlib/.depend
index 6af3a5eee..30eeb857e 100644
--- a/stdlib/.depend
+++ b/stdlib/.depend
@@ -137,9 +137,11 @@ camlinternalFormatBasics.cmx : \
     camlinternalFormatBasics.cmi
 camlinternalFormatBasics.cmi :
 camlinternalLazy.cmo : \
+    stdlib__sys.cmi \
     stdlib__obj.cmi \
     camlinternalLazy.cmi
 camlinternalLazy.cmx : \
+    stdlib__sys.cmx \
     stdlib__obj.cmx \
     camlinternalLazy.cmi
 camlinternalLazy.cmi :