diff --git a/namd.nix b/namd.nix
index 67b65d9..fa0eca1 100644
--- a/namd.nix
+++ b/namd.nix
@@ -48,7 +48,6 @@ stdenv.mkDerivation rec {
   '';
 
   buildInputs = [
-    perl
     bash
     tcsh
   ];