diff --git a/.config/aerc/aerc.conf b/.config/aerc/aerc.conf
index 09afc78d..e806cff4 100644
--- a/.config/aerc/aerc.conf
+++ b/.config/aerc/aerc.conf
@@ -695,7 +695,7 @@ always-show-mime=true
 # Warn before sending an email with an empty subject.
 #
 # Default: false
-#empty-subject-warning=false
+empty-subject-warning=true
 
 #
 # Warn before sending an email that matches the specified regexp but does not
@@ -705,7 +705,7 @@ always-show-mime=true
 # "(?im)" flags are set by default (case-insensitive and multi-line).
 #
 # Example:
-# no-attachment-warning=^[^>]*attach(ed|ment)
+no-attachment-warning=^[^>]*attach(ed|ment)
 #
 #no-attachment-warning=
 
@@ -727,7 +727,7 @@ always-show-mime=true
 #
 # Example (obviously, this requires that you write your main text/plain body
 # using the markdown syntax):
-text/html=pandoc -f markdown -t html --standalone
+# text/html=pandoc -f markdown -t html --standalone
 
 [filters]
 #