diff --git a/include/pocketpy/common/vector.hpp b/include/pocketpy/common/vector.hpp
index 3d54ccdf..12600d65 100644
--- a/include/pocketpy/common/vector.hpp
+++ b/include/pocketpy/common/vector.hpp
@@ -184,7 +184,6 @@ struct vector {
     void clear() {
         std::destroy(begin(), end());
         _size = 0;
-        _capacity = 0;
     }
 
     void reserve(int cap) {