diff --git a/cache.py b/cache.py
index 0ac180f80..08d7386c1 100644
--- a/cache.py
+++ b/cache.py
@@ -45,8 +45,9 @@ def getPersonFromCache(baseDir: str, personUrl: str, personCache: {},
         # does the person exist as a cached file?
         cacheFilename = baseDir + '/cache/actors/' + \
             personUrl.replace('/', '#')+'.json'
-        if os.path.isfile(getFileCaseInsensitive(cacheFilename)):
-            personJson = loadJson(getFileCaseInsensitive(cacheFilename))
+        actorFilename = getFileCaseInsensitive(cacheFilename)
+        if actorFilename:
+            personJson = loadJson(actorFilename)
             if personJson:
                 storePersonInCache(baseDir, personUrl, personJson,
                                    personCache, False)
diff --git a/daemon.py b/daemon.py
index 3b322a57e..bebb1ff27 100644
--- a/daemon.py
+++ b/daemon.py
@@ -7516,7 +7516,8 @@ class PubServer(BaseHTTPRequestHandler):
                         if fields.get('removeTwitter'):
                             if fields['removeTwitter'] == 'on':
                                 removeTwitterActive = True
-                                with open(removeTwitterFilename, 'w+') as rFile:
+                                with open(removeTwitterFilename,
+                                          'w+') as rFile:
                                     rFile.write('\n')
                         if not removeTwitterActive:
                             if os.path.isfile(removeTwitterFilename):
diff --git a/utils.py b/utils.py
index f143bebbd..1a5e1b708 100644
--- a/utils.py
+++ b/utils.py
@@ -907,21 +907,19 @@ def searchBoxPosts(baseDir: str, nickname: str, domain: str,
 def getFileCaseInsensitive(path: str) -> str:
     """Returns a case specific filename given a case insensitive version of it
     """
-    # does the given file exist? If so then we don't need
-    # to do a directory search
     if os.path.isfile(path):
         return path
     if path != path.lower():
         if os.path.isfile(path.lower()):
             return path.lower()
-    directory, filename = os.path.split(path)
-    directory, filename = (directory or '.'), filename.lower()
-    for f in os.listdir(directory):
-        if f.lower() == filename:
-            newpath = os.path.join(directory, f)
-            if os.path.isfile(newpath):
-                return newpath
-    return path
+    # directory, filename = os.path.split(path)
+    # directory, filename = (directory or '.'), filename.lower()
+    # for f in os.listdir(directory):
+    #     if f.lower() == filename:
+    #         newpath = os.path.join(directory, f)
+    #         if os.path.isfile(newpath):
+    #             return newpath
+    return None
 
 
 def undoLikesCollectionEntry(recentPostsCache: {},
diff --git a/webinterface.py b/webinterface.py
index 778565009..ad6691c2e 100644
--- a/webinterface.py
+++ b/webinterface.py
@@ -27,7 +27,6 @@ from matrix import getMatrixAddress
 from donate import getDonationUrl
 from utils import removeIdEnding
 from utils import getProtocolPrefixes
-from utils import getFileCaseInsensitive
 from utils import searchBoxPosts
 from utils import isEventPost
 from utils import isBlogPost
@@ -304,16 +303,13 @@ def getPersonAvatarUrl(baseDir: str, personUrl: str, personCache: {},
     # get from locally stored image
     actorStr = personJson['id'].replace('/', '-')
     avatarImagePath = baseDir + '/cache/avatars/' + actorStr
-    if os.path.isfile(getFileCaseInsensitive(avatarImagePath + '.png')):
-        return '/avatars/' + actorStr + '.png'
-    elif os.path.isfile(getFileCaseInsensitive(avatarImagePath + '.jpg')):
-        return '/avatars/' + actorStr + '.jpg'
-    elif os.path.isfile(getFileCaseInsensitive(avatarImagePath + '.gif')):
-        return '/avatars/' + actorStr + '.gif'
-    elif os.path.isfile(getFileCaseInsensitive(avatarImagePath + '.webp')):
-        return '/avatars/' + actorStr + '.webp'
-    elif os.path.isfile(getFileCaseInsensitive(avatarImagePath)):
-        return '/avatars/' + actorStr
+
+    imageExtension = ('png', 'jpg', 'jpeg', 'gif', 'webp')
+    for ext in imageExtension:
+        if os.path.isfile(avatarImagePath + '.' + ext):
+            return '/avatars/' + actorStr + '.' + ext
+        elif os.path.isfile(avatarImagePath.lower() + '.' + ext):
+            return '/avatars/' + actorStr.lower() + '.' + ext
 
     if personJson.get('icon'):
         if personJson['icon'].get('url'):
@@ -6649,7 +6645,7 @@ def htmlCalendar(translate: {},
     for weekOfMonth in range(1, 7):
         if dayOfMonth == daysInMonth:
             continue
-        calendarStr += '  <tr>\n'        
+        calendarStr += '  <tr>\n'
         for dayNumber in range(1, 8):
             if (weekOfMonth > 1 and dayOfMonth < daysInMonth) or \
                (weekOfMonth == 1 and dayNumber >= dow):