diff --git a/src/dosbox.cpp b/src/dosbox.cpp
index 1535114d..d8bf6346 100644
--- a/src/dosbox.cpp
+++ b/src/dosbox.cpp
@@ -192,6 +192,7 @@ void DOSBOX_Init(void) {
 	secprop->Add_int("irq",7);
 	secprop->Add_int("dma",1);
 	secprop->Add_int("hdma",5);
+	secprop->Add_int("sbrate",22050);
 	secprop->Add_bool("enabled",true);
 
 	secprop->AddInitFunction(&ADLIB_Init);