diff --git a/ipc/common.proto b/ipc/common.proto
index c527f84..58e7755 100644
--- a/ipc/common.proto
+++ b/ipc/common.proto
@@ -46,8 +46,8 @@ enum PropertyType {
 	Boolean = 1;
 	String = 2;
 	Bytes = 3;
-	Stream = 4;
-	AudioSpec = 5;
+	StreamType = 4;
+	AudioSpecType = 5;
 	StreamID = 6;
 }
 message Property {