diff --git a/utils.py b/utils.py
index ea2a32076..4c106d2ff 100644
--- a/utils.py
+++ b/utils.py
@@ -3805,11 +3805,12 @@ def disallow_announce(content: str) -> bool:
         "don't boost",
         'boost_denied',
         'boosts_denied',
-        'BoostDenied',
-        'BoostsDenied'
+        'boostdenied',
+        'boostsdenied'
     )
+    content_lower = content.lower()
     for diss in disallow_strings:
-        if diss in content:
+        if diss in content_lower:
             return True
     return False
 
@@ -3828,10 +3829,12 @@ def disallow_reply(content: str) -> bool:
         'do not reply',
         "don't reply",
         "don't @ me",
-        'DontAtMe'
+        'dont@me',
+        'dontatme'
     )
+    content_lower = content.lower()
     for diss in disallow_strings:
-        if diss in content:
+        if diss in content_lower:
             return True
     return False