diff --git a/Alc/ALc.c b/Alc/ALc.c
index 1aa34225..255265b5 100644
--- a/Alc/ALc.c
+++ b/Alc/ALc.c
@@ -712,6 +712,7 @@ static const ALchar alExtList[] =
     "AL_SOFT_block_alignment "
     "AL_SOFT_deferred_updates "
     "AL_SOFT_direct_channels "
+    "AL_SOFTX_events "
     "AL_SOFT_gain_clamp_ex "
     "AL_SOFT_loop_points "
     "AL_SOFTX_map_buffer "