diff --git a/pkgs/shells/zsh/zsh-completions/default.nix b/pkgs/shells/zsh/zsh-completions/default.nix
index d5a66e366bd..a108473d373 100644
--- a/pkgs/shells/zsh/zsh-completions/default.nix
+++ b/pkgs/shells/zsh/zsh-completions/default.nix
@@ -14,6 +14,9 @@ stdenv.mkDerivation rec {
   strictDeps = true;
   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 = {