diff --git a/mkdocs-insiders.yml b/mkdocs-insiders.yml
index dff12ec..977b2af 100644
--- a/mkdocs-insiders.yml
+++ b/mkdocs-insiders.yml
@@ -30,4 +30,5 @@ plugins:
       target: _blank 
       rel: nofollow   
   optimize:
-    enabled: false
+    enabled: true
+    concurrency: 1 # debug netlify failures
diff --git a/mkdocs.yml b/mkdocs.yml
index 7e25fd9..33ac0d1 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -60,7 +60,7 @@ plugins:
     debug_html: false
     show_anchors: true
     verbose: false
-    enabled_if_env: ENABLE_PDF_EXPORTNOPE
+    enabled_if_env: ENABLE_PDF_EXPORT
 
 
 #theme_dir: mkdocs-material