diff --git a/nzbtomedia/autoProcess/autoProcessComics.py b/nzbtomedia/autoProcess/autoProcessComics.py
index 78876934..01332e96 100644
--- a/nzbtomedia/autoProcess/autoProcessComics.py
+++ b/nzbtomedia/autoProcess/autoProcessComics.py
@@ -29,6 +29,8 @@ class autoProcessComics:
 
         inputName, dirName = convert_to_ascii(inputName, dirName)
 
+        replaceExtensions(dirName)
+
         params = {}
         params['nzb_folder'] = dirName
         if remote_path:
diff --git a/nzbtomedia/nzbToMediaUtil.py b/nzbtomedia/nzbToMediaUtil.py
index eea69ff4..83f760df 100644
--- a/nzbtomedia/nzbToMediaUtil.py
+++ b/nzbtomedia/nzbToMediaUtil.py
@@ -39,6 +39,21 @@ def sanitizeName(name):
 
     return name
 
+def replaceExtensions(path):
+    for dirpath, dirnames, filesnames in os.walk(path):
+        for filename in filesnames:
+            name, ext = os.path.splitext(filename)
+            if ext in nzbtomedia.EXT_REPLACE:
+                file = os.path.join(dirpath, filename)
+                target = os.path.join(dirpath, name + nzbtomedia.EXT_REPLACE[ext])
+                try:
+                    logger.debug("Renaming %s to %s" % (file, target), 'RENAME')
+                    shutil.move(file, target)
+                except:
+                    logger.error("Could not rename %s to %s" % (file, target), 'RENAME')
+            else:
+                continue         
+
 def makeDir(path):
     if not os.path.isdir(path):
         try: