diff --git a/pkgs/development/php-packages/psysh/default.nix b/pkgs/development/php-packages/psysh/default.nix
index b3c27be1d7ce..7101e01c5c09 100644
--- a/pkgs/development/php-packages/psysh/default.nix
+++ b/pkgs/development/php-packages/psysh/default.nix
@@ -48,11 +48,9 @@ php.buildComposerProject2 (finalAttrs: {
     vendorHash = "sha256-8l5bQ+VnLOtPUspMN1f+iXo7LldPTuYqyrAeW2aVoH8=";
   };
 
-  nativeInstallCheckInputs = [
-    versionCheckHook
-  ];
-  versionCheckProgramArg = [ "--version" ];
   doInstallCheck = true;
+  nativeInstallCheckInputs = [ versionCheckHook ];
+  versionCheckProgramArg = "--version";
 
   meta = {
     changelog = "https://github.com/bobthecow/psysh/releases/tag/v${finalAttrs.version}";