diff --git a/src/libespeak-ng/voices.c b/src/libespeak-ng/voices.c
index 71570208..85210481 100644
--- a/src/libespeak-ng/voices.c
+++ b/src/libespeak-ng/voices.c
@@ -960,6 +960,7 @@ voice_t *LoadVoice(const char *vname, int control)
 			}
 		}
 
+		/* Terminate languages list with a zero-priority entry */
 		voice_languages[langix] = 0;
 	}