1 files changed, 1 insertions, 0 deletions
diff --git a/README b/README
index cfab03af45..40948483b7 100644
--- a/README
+++ b/README
@@ -867,6 +867,7 @@ Simon the Sorcerer 1 & 2 add the following non-standard keywords:
 
         fade            bool     If true, fade effect is enabled
         slow_down       number   Makes games slower (1- 10)
+        sfx_mute        bool     If true, sound effects are muted
         speech_mute     bool     If true, speech is muted
                                  [Simon the Sorcerer 2 only]