diff --git a/encode.py b/encode.py
index abe8951..38e1d2b 100755
--- a/encode.py
+++ b/encode.py
@@ -45,6 +45,9 @@ def encode_episode(podcast, episode, format):
         command.extend(["-i", infile])
         if format not in ["oga", "opus"]:
             command.extend(["-i", episode["poster"]])
+        # For AAC, the default codec choice (ffmpeg native) is not the best choice
+        if format == "m4a":
+            command.extend(["-c:a", "libfdk_aac"])
         command.extend(["-c:v", "copy"])
         command.extend(options)
         for k, v in tags.items():