diff --git a/.merlin b/.merlin
index f9975114..873a7262 100644
--- a/.merlin
+++ b/.merlin
@@ -24,7 +24,6 @@ PKG threads.posix
 PKG lwt
 PKG bigarray
 PKG sequence
-PKG hamt
 PKG gen
 PKG qcheck
 FLG -w +a -w -4 -w -44