diff --git a/pkgs/tools/misc/charasay/default.nix b/pkgs/tools/misc/charasay/default.nix
index 20594414daef..f52312b387d0 100644
--- a/pkgs/tools/misc/charasay/default.nix
+++ b/pkgs/tools/misc/charasay/default.nix
@@ -24,10 +24,10 @@ rustPlatform.buildRustPackage rec {
   '';
 
   postInstall = ''
-    installShellCompletion --cmd himalaya \
-      --bash <($out/bin/chara completion --shell bash) \
-      --fish <($out/bin/chara completion --shell fish) \
-      --zsh <($out/bin/chara completion --shell zsh)
+    installShellCompletion --cmd chara \
+      --bash <($out/bin/chara completions --shell bash) \
+      --fish <($out/bin/chara completions --shell fish) \
+      --zsh <($out/bin/chara completions --shell zsh)
   '';
 
   meta = with lib; {