diff --git a/Makefile b/Makefile
index 88c22033..61f3a22c 100644
--- a/Makefile
+++ b/Makefile
@@ -111,7 +111,7 @@ build-deps-ubuntu:
 docs: docs-deps docs-build
 
 docs-build: .PHONY
-		mkdocs build
+	mkdocs build
 
 docs-deps: .PHONY
 	pip3 install -r requirements.txt
diff --git a/mkdocs.yml b/mkdocs.yml
index 7b14ee0c..98a2d078 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -64,7 +64,6 @@ markdown_extensions:
   - attr_list
   - md_in_html
   - pymdownx.emoji:
-      emoji_index: !!python/name:materialx.emoji.twemoji
       emoji_generator: !!python/name:materialx.emoji.to_svg
 
 plugins: