diff --git a/pkgs/shells/zsh/zsh-completions/default.nix b/pkgs/shells/zsh/zsh-completions/default.nix
index f75570a46b5b..a108473d373c 100644
--- a/pkgs/shells/zsh/zsh-completions/default.nix
+++ b/pkgs/shells/zsh/zsh-completions/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub}:
+{ lib, stdenv, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {
   pname = "zsh-completions";
@@ -12,8 +12,11 @@ stdenv.mkDerivation rec {
   };
 
   strictDeps = true;
-  installPhase= ''
+  installPhase = ''
     install -D --target-directory=$out/share/zsh/site-functions src/*
+
+    # tmuxp install it so avoid collision
+    rm $out/share/zsh/site-functions/_tmuxp
   '';
 
   meta = {