diff --git a/pkgs/applications/networking/sieve-connect/default.nix b/pkgs/applications/networking/sieve-connect/default.nix
index d4866d9f1a41..11a9a4fbc2af 100644
--- a/pkgs/applications/networking/sieve-connect/default.nix
+++ b/pkgs/applications/networking/sieve-connect/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
   installPhase = ''
     mkdir -p $out/bin $out/share/man/man1
     install -m 755 sieve-connect $out/bin
-    gzip -c sieve-connect.1 > $out/share/man/man1/sieve-connect.1.gz
+    install -m 644 sieve-connect.1 $out/share/man/man1
 
     wrapProgram $out/bin/sieve-connect \
       --prefix PERL5LIB : "${with perlPackages; makePerlPath [