diff --git a/src/devices/sound/mm5837.cpp b/src/devices/sound/mm5837.cpp
index c10e6b3639b..6049b64d0fe 100644
--- a/src/devices/sound/mm5837.cpp
+++ b/src/devices/sound/mm5837.cpp
@@ -17,7 +17,7 @@
 //**************************************************************************
 
 DEFINE_DEVICE_TYPE(MM5837, mm5837_device, "mm5837", "MM5837 Digital Noise Source")
-DEFINE_DEVICE_TYPE(MM5837_STREAM, mm5837_stream_device, "mm5837", "MM5837 Digital Noise Stream")
+DEFINE_DEVICE_TYPE(MM5837_STREAM, mm5837_stream_device, "mm5837_stream", "MM5837 Digital Noise Stream")
 
 
 //**************************************************************************