diff --git a/pkgs/applications/window-managers/i3/lock-color.nix b/pkgs/applications/window-managers/i3/lock-color.nix
index 66a6af2fbb08..b7545d5cd1c5 100644
--- a/pkgs/applications/window-managers/i3/lock-color.nix
+++ b/pkgs/applications/window-managers/i3/lock-color.nix
@@ -25,6 +25,8 @@ stdenv.mkDerivation rec {
   installFlags = "PREFIX=\${out} SYSCONFDIR=\${out}/etc MANDIR=\${out}/share/man";
   postInstall = ''
     mv $out/bin/i3lock $out/bin/i3lock-color
+    mv $out/share/man/man1/i3lock.1 $out/share/man/man1/i3lock-color.1
+    sed -i 's/\(^\|\s\|"\)i3lock\(\s\|$\)/\1i3lock-color\2/g' $out/share/man/man1/i3lock-color.1
   '';
   meta = with stdenv.lib; {
     description = "A simple screen locker like slock";