diff --git a/pkgs/tools/system/incron/default.nix b/pkgs/tools/system/incron/default.nix
index 43b91f6fac1..d29575f8be3 100644
--- a/pkgs/tools/system/incron/default.nix
+++ b/pkgs/tools/system/incron/default.nix
@@ -12,7 +12,6 @@ stdenv.mkDerivation rec {
   patches = [ ./default_path.patch ];
 
   prePatch = ''
-    sed -i "s|PREFIX = /usr/local|PREFIX = $out|g" Makefile
     sed -i "s|/bin/bash|${bash}/bin/bash|g" usertable.cpp
   '';