diff --git a/include/core/Vector2.hpp b/include/core/Vector2.hpp
index 99ac60f2..5364330c 100644
--- a/include/core/Vector2.hpp
+++ b/include/core/Vector2.hpp
@@ -180,8 +180,8 @@ struct Vector2 {
 		return -reflect(p_normal);
 	}
 
-	inline Vector2 reflect(const Vector2 &p_vec) const {
-		return p_vec - *this * this->dot(p_vec) * 2.0;
+	inline Vector2 reflect(const Vector2 &p_normal) const {
+		return -(*this -p_normal * this->dot(p_normal) * 2.0);
 	}
 
 	inline real_t angle() const {
diff --git a/include/core/Vector3.hpp b/include/core/Vector3.hpp
index 2d78f211..8b39113b 100644
--- a/include/core/Vector3.hpp
+++ b/include/core/Vector3.hpp
@@ -238,8 +238,8 @@ struct Vector3 {
 		return v;
 	}
 
-	inline Vector3 reflect(const Vector3 &by) const {
-		return by - *this * this->dot(by) * 2.f;
+	inline Vector3 reflect(const Vector3 &p_normal) const {
+		return -(*this - p_normal  * this->dot(p_normal) * 2.f);
 	}
 
 	inline Vector3 rotated(const Vector3 &axis, const real_t phi) const {