diff --git a/include/mtl/string.hpp b/include/mtl/string.hpp
index 3284cb0..70b1f63 100644
--- a/include/mtl/string.hpp
+++ b/include/mtl/string.hpp
@@ -19,8 +19,8 @@ namespace mtl {
 class istring {
 protected:
 	char* m_str;
-	size_t m_size;
 	size_t m_capacity;
+	size_t m_size;
 
 public:
 	static constexpr const size_t npos = -1;
diff --git a/include/mtl/vector.hpp b/include/mtl/vector.hpp
index 6738b93..a356592 100644
--- a/include/mtl/vector.hpp
+++ b/include/mtl/vector.hpp
@@ -18,8 +18,8 @@ template <typename T>
 class ivector {
 private:
 	T* m_arr;
-	size_t m_size;
 	const size_t m_capacity;
+	size_t m_size;
 
 public:
 	using value_type = T;