diff --git a/packages/opencode/src/bun/index.ts b/packages/opencode/src/bun/index.ts
index e74cb5bd..34f9386c 100644
--- a/packages/opencode/src/bun/index.ts
+++ b/packages/opencode/src/bun/index.ts
@@ -28,8 +28,6 @@ export namespace BunProc {
   }
 
   export function which() {
-    return process.argv0 !== "bun"
-      ? path.resolve(process.cwd(), process.argv[0])
-      : "bun"
+    return process.execPath
   }
 }