diff --git a/config/en/mkdocs.yaml b/config/en/mkdocs.yaml
index 256d2e4..fe5ff03 100755
--- a/config/en/mkdocs.yaml
+++ b/config/en/mkdocs.yaml
@@ -26,7 +26,7 @@ extra:
 
 plugins:
   - search:
-    lang: en
+      lang: en
 
 markdown_extensions:
   - pymdownx.arithmatex:
diff --git a/config/nl/mkdocs.yaml b/config/nl/mkdocs.yaml
index 4ac8c14..41b1165 100755
--- a/config/nl/mkdocs.yaml
+++ b/config/nl/mkdocs.yaml
@@ -26,7 +26,7 @@ extra:
 
 plugins:
   - search:
-    lang: nl
+      lang: nl
 
 markdown_extensions:
   - pymdownx.arithmatex: