diff --git a/src/scripting/vmthunks_actors.cpp b/src/scripting/vmthunks_actors.cpp
index 6338507b61..9a44ac916a 100644
--- a/src/scripting/vmthunks_actors.cpp
+++ b/src/scripting/vmthunks_actors.cpp
@@ -198,7 +198,14 @@ DEFINE_ACTION_FUNCTION_NATIVE(AActor, A_StartSound, A_StartSound)
 	return 0;
 }
 
-DEFINE_ACTION_FUNCTION_NATIVE(AActor, A_StartSoundIfNotSame, A_StartSound)
+
+void A_StartSoundIfNotSame(AActor *self, int soundid, int checksoundid, int channel, int flags, double volume, double attenuation, double pitch, double startTime)
+{
+	if (!S_AreSoundsEquivalent (self, soundid, checksoundid))
+		A_StartSound(self, soundid, channel, flags, volume, attenuation, pitch, startTime);
+}
+
+DEFINE_ACTION_FUNCTION_NATIVE(AActor, A_StartSoundIfNotSame, A_StartSoundIfNotSame)
 {
 	PARAM_SELF_PROLOGUE(AActor);
 	PARAM_SOUND(soundid);
@@ -209,8 +216,7 @@ DEFINE_ACTION_FUNCTION_NATIVE(AActor, A_StartSoundIfNotSame, A_StartSound)
 	PARAM_FLOAT(attenuation);
 	PARAM_FLOAT(pitch);
 	PARAM_FLOAT(startTime);
-	if (!S_AreSoundsEquivalent (self, soundid, checksoundid))
-		A_StartSound(self, soundid, channel, flags, volume, attenuation, pitch, startTime);
+	A_StartSoundIfNotSame(self, soundid, checksoundid, channel, flags, volume, attenuation, pitch, startTime);
 	return 0;
 }