diff --git a/include/Spectre/Math/Vector2.h b/include/Spectre/Math/Vector2.h
index e259c96..a1849cf 100644
--- a/include/Spectre/Math/Vector2.h
+++ b/include/Spectre/Math/Vector2.h
@@ -39,7 +39,7 @@ struct Vector2
 
 	inline Vector2<T>& reflect(const Vector2<T>& n);
 
-	std::string toString() const;
+	inline std::string toString() const;
 };
 
 // ------------
diff --git a/include/Spectre/Math/Vector2.inl b/include/Spectre/Math/Vector2.inl
index 819695a..241a405 100644
--- a/include/Spectre/Math/Vector2.inl
+++ b/include/Spectre/Math/Vector2.inl
@@ -58,7 +58,7 @@ inline Vector2<T>& Vector2<T>::reflect(const Vector2<T>& n)
 }
 
 template <typename T>
-std::string Vector2<T>::toString() const
+inline std::string Vector2<T>::toString() const
 {
 	return core::to_string(x) + ", " + core::to_string(y);
 }