diff --git a/acgtk.opam b/acgtk.opam
index 1d94ef4364e6eb778f02b81f138f2e39c700cb38..41bce876c080de63858c1774d906bf1c6ce735f1 100644
--- a/acgtk.opam
+++ b/acgtk.opam
@@ -12,7 +12,7 @@ build: [
 install: ["dune" "install"]
 
 depends: [
-  "ocaml" {version >= "4.03.0"}
+  "ocaml" { >= "4.03.0"}
   "dune" {build}
   "menhir"
   "ANSITerminal"