diff --git a/opam/opam b/opam/opam
index 859e70202be557be065bb940943269bc8d9d7c01..a102e260f1917bf705f3806fcdaad692a90754f1 100644
--- a/opam/opam
+++ b/opam/opam
@@ -63,7 +63,7 @@ authors: [
   "Boris Yakobowski"
 ]
 homepage: "http://frama-c.com/"
-license: "GNU Lesser General Public License version 2.1"
+license: "LGPL-2.1-only"
 dev-repo: "git+https://git.frama-c.com/pub/frama-c.git"
 doc: "http://frama-c.com/download/user-manual-22.0-Titanium.pdf"
 bug-reports: "https://git.frama-c.com/pub/frama-c/issues"