diff --git a/pkgs/by-name/da/daemontools/package.nix b/pkgs/by-name/da/daemontools/package.nix
index 996ec6f904b2..e137079280e7 100644
--- a/pkgs/by-name/da/daemontools/package.nix
+++ b/pkgs/by-name/da/daemontools/package.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
     sed -i -e '1 s_$_ -include ${glibc.dev}/include/errno.h_' src/conf-cc
 
     substituteInPlace src/Makefile \
-      --replace '/bin/sh' '${bash}/bin/bash -oxtrace'
+      --replace-fail '/bin/sh' '${bash}/bin/bash -oxtrace'
 
     sed -i -e "s_^PATH=.*_PATH=$src/daemontools-${version}/compile:''${PATH}_" src/rts.tests