diff --git a/vendors/ocplib-json-typed/Makefile b/vendors/ocplib-json-typed/Makefile
index 4cfc21d4e..d56625796 100644
--- a/vendors/ocplib-json-typed/Makefile
+++ b/vendors/ocplib-json-typed/Makefile
@@ -1,5 +1,5 @@
 all:
-	dune build @install @runtest --dev
+	dune build @install @runtest
 
 install:
 	dune install