diff --git a/src/volume.h b/src/volume.h
index 99d31da4e..8ab38ce60 100644
--- a/src/volume.h
+++ b/src/volume.h
@@ -23,8 +23,6 @@
 #include <stdbool.h>
 #include <stdio.h>
 
-#define VOLUME_MIXER_OSS	"oss"
-#define VOLUME_MIXER_ALSA	"alsa"
 #define VOLUME_MIXER_SOFTWARE	"software"
 #define VOLUME_MIXER_HARDWARE	"hardware"
 #define VOLUME_MIXER_DISABLED	"disabled"