diff --git a/prototype_source/prototype_index.rst b/prototype_source/prototype_index.rst
index 92a1f5f32ca..1f303e7d159 100644
--- a/prototype_source/prototype_index.rst
+++ b/prototype_source/prototype_index.rst
@@ -97,7 +97,7 @@ Prototype features are not available as part of binary distributions like PyPI o
    :card_description: Prune BERT to be 2:4 sparse and accelerate for inference.
    :image: _static/img/thumbnails/cropped/generic-pytorch-logo.png
    :link: prototype/semi_structured_sparse.html
-   :tags: Model-Optimziation
+   :tags: Model-Optimiziation
 
 .. Mobile