diff --git a/src/Source/Float4.cs b/src/Source/Float4.cs
index 70fed98..5ecc8b3 100644
--- a/src/Source/Float4.cs
+++ b/src/Source/Float4.cs
@@ -12,7 +12,7 @@ public Float2(float x, float y, float z, float w)
             this.W = w;
         }
     
-        public override ToString()
+        public override string ToString()
         {
             return $"({X}, {Y}, {Z}, {W})";
         }