diff --git a/src/p_actionfunctions.cpp b/src/p_actionfunctions.cpp
index a62ce0210..ea64c36d3 100644
--- a/src/p_actionfunctions.cpp
+++ b/src/p_actionfunctions.cpp
@@ -979,6 +979,15 @@ DEFINE_ACTION_FUNCTION(AActor, A_StopSound)
 	return 0;
 }
 
+DEFINE_ACTION_FUNCTION(AActor, A_SoundVolume)
+{
+	PARAM_SELF_PROLOGUE(AActor);
+	PARAM_INT(channel);
+	PARAM_FLOAT(volume);
+	S_ChangeSoundVolume(self, channel, static_cast<float>(volume));
+	return 0;
+}
+
 //==========================================================================
 //
 // These come from a time when DECORATE constants did not exist yet and
diff --git a/wadsrc/static/zscript/actor.txt b/wadsrc/static/zscript/actor.txt
index 509dd39e3..682c70af6 100644
--- a/wadsrc/static/zscript/actor.txt
+++ b/wadsrc/static/zscript/actor.txt
@@ -1000,6 +1000,7 @@ class Actor : Thinker native
 	deprecated("2.3") native void A_BulletAttack();
 	native void A_WolfAttack(int flags = 0, sound whattoplay = "weapons/pistol", double snipe = 1.0, int maxdamage = 64, int blocksize = 128, int pointblank = 2, int longrange = 4, double runspeed = 160.0, class<Actor> pufftype = "BulletPuff");
 	native void A_PlaySound(sound whattoplay = "weapons/pistol", int slot = CHAN_BODY, double volume = 1.0, bool looping = false, double attenuation = ATTN_NORM, bool local = false);
+	native void A_SoundVolume(int slot, double volume);
 	deprecated("2.3") void A_PlayWeaponSound(sound whattoplay) { A_PlaySound(whattoplay, CHAN_WEAPON); }
 	native void A_StopSound(int slot = CHAN_VOICE);	// Bad default but that's what is originally was...
 	deprecated("2.3") native void A_PlaySoundEx(sound whattoplay, name slot, bool looping = false, int attenuation = 0);