diff --git a/src/lib/mixer_module/params.c b/src/lib/mixer_module/params.c
index 72e0f0ff9ff3..ac4cfea0809d 100644
--- a/src/lib/mixer_module/params.c
+++ b/src/lib/mixer_module/params.c
@@ -24,7 +24,7 @@ PARAM_DEFINE_INT32(MC_AIRMODE, 0);
  *
  * @unit %
  * @min 0
- * @max 100
+ * @max 30
  * @increment 0.1
  * @group Mixer Output
  */