diff --git a/otc_metadata/templates/tox.ini.j2 b/otc_metadata/templates/tox.ini.j2
index 8f60a5d8..2bf9af6a 100644
--- a/otc_metadata/templates/tox.ini.j2
+++ b/otc_metadata/templates/tox.ini.j2
@@ -70,7 +70,7 @@ commands =
   sphinx-build -W --keep-going -b html {{ loc }}/source doc/build/html_temp/{{ doc.type }}
   sphinx-minify --input-directory doc/build/html_temp/{{ doc.type }} --output-directory doc/build/html/{{ doc.type }}
 {%- if doc.type == 'dev-guide' %}
-  mkdir -p dev_guide/build/html		
+  mkdir -p dev_guide/build/html
   cp -av doc/build/html/dev-guide dev_guide/build/html
 {%- else %}
   mkdir -p {{ doc.type }}/build/html
@@ -90,7 +90,7 @@ commands =
   # in tox
   sh -c "find doc/build/json -type d -and '(' -name '_images' -or -name '_static' -or -name '_sources' ')' -print0 | xargs -0 rm -rf"
 {%- if doc.type == 'dev-guide' %}
-  mkdir -p dev_guide/build/json		
+  mkdir -p dev_guide/build/json
   cp -av doc/build/json/dev-guide dev_guide/build/json
 {%- else %}
   mkdir -p {{ doc.type }}/build/json