diff --git a/src/bindings/fluid_filerenderer.c b/src/bindings/fluid_filerenderer.c
index bbe903b2..01fa8fec 100644
--- a/src/bindings/fluid_filerenderer.c
+++ b/src/bindings/fluid_filerenderer.c
@@ -310,6 +310,7 @@ new_fluid_file_renderer(fluid_synth_t* synth)
 /**
  * Set vbr encoding quality (only available with libsndfile support)
  * @param dev File renderer object.
+ * @return #FLUID_OK if the quality has been successfully set, #FLUID_FAILED otherwise
  * @since 1.1.7
  */
 int