diff --git a/src/Magnum/PixelStorage.h b/src/Magnum/PixelStorage.h
index 3256394fd..cd38b2f6b 100644
--- a/src/Magnum/PixelStorage.h
+++ b/src/Magnum/PixelStorage.h
@@ -38,8 +38,6 @@
 
 namespace Magnum {
 
-namespace Implementation { struct RendererState; }
-
 /**
 @brief Pixel storage parameters