diff --git a/src/filters/neighboring_pixels.h b/src/filters/neighboring_pixels.h
index 6aaf8e546..78645ae6b 100644
--- a/src/filters/neighboring_pixels.h
+++ b/src/filters/neighboring_pixels.h
@@ -33,7 +33,7 @@ inline void get_neighboring_pixels(const Image* sourceImage, int x, int y,
 				   int width, int height,
 				   int centerX, int centerY,
 				   TiledMode tiledMode,
-				   typename Delegate& delegate)
+				   Delegate& delegate)
 {
   int dx, dy;