diff --git a/Source/Engine/Core/Math/Int2.h b/Source/Engine/Core/Math/Int2.h
index c7bcae257..d2ec16623 100644
--- a/Source/Engine/Core/Math/Int2.h
+++ b/Source/Engine/Core/Math/Int2.h
@@ -6,10 +6,6 @@
 #include "Engine/Core/Formatting.h"
 #include "Engine/Core/Templates.h"
 
-struct Vector2;
-struct Vector3;
-struct Vector4;
-
 /// <summary>
 /// Two-components vector (32 bit integer type).
 /// </summary>