diff --git a/content/en/functions/images/index.md b/content/en/functions/images/index.md
index 350d005ee..92c6ff0da 100644
--- a/content/en/functions/images/index.md
+++ b/content/en/functions/images/index.md
@@ -128,7 +128,7 @@ images.GaussianBlur SIGMA
 
 GaussianBlur creates a filter that applies a gaussian blur to an image.
 
-### Grayscale
+## Grayscale
 
 {{% funcsig %}}
 images.Grayscale