diff --git a/src/ffx/ffx.py b/src/ffx/ffx.py
index a57a9be..1f5997e 100755
--- a/src/ffx/ffx.py
+++ b/src/ffx/ffx.py
@@ -544,7 +544,7 @@ def convert(ctx,
 
     tc = TmdbController() if context['use_tmdb'] else None
 
-    qualityKwargs = {QualityFilter.QUALITY_KEY: (QualityFilter.DEFAULT_H264_QUALITY if (context['video_encoder'] == VideoEncoder.H264 and not quality) else quality)}
+    qualityKwargs = {QualityFilter.QUALITY_KEY: str(QualityFilter.DEFAULT_H264_QUALITY if (context['video_encoder'] == VideoEncoder.H264 and not quality) else quality)}
     qf = QualityFilter(**qualityKwargs)
 
     if context['video_encoder'] == VideoEncoder.AV1 and preset: