diff --git a/src/commands.ts b/src/commands.ts
index ef267a7..929f545 100644
--- a/src/commands.ts
+++ b/src/commands.ts
@@ -44,10 +44,10 @@ export function commandPath(cmd: string): string | undefined {
   ]
 
   if (projectName() !== "sys")
-    paths.concat([
+    paths = paths.concat(
       join(projectBin(), cmd + ".ts"),
       join(projectBin(), cmd + ".tsx"),
-    ])
+    )
 
   return paths.find((path: string) => isFile(path))
 }