diff --git a/README.md b/README.md
index 238f1a7..b539f7b 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ import "github.com/nfnt/resize"
 Resize creates a scaled image with new dimensions (w,h) using the interpolation function interp.
 
 ```go
-resize.Resize(w int, h int, img image.Image, interp InterpolationFunction) image.Image 
+resize.Resize(w int, h int, img image.Image, interp resize.InterpolationFunction) image.Image 
 ```
 
 The provided interpolation functions are