diff --git a/sys/compat/linux/linux_ioctl.c b/sys/compat/linux/linux_ioctl.c
index 07a281e2926e..4237f6f08823 100644
--- a/sys/compat/linux/linux_ioctl.c
+++ b/sys/compat/linux/linux_ioctl.c
@@ -1749,7 +1749,7 @@ linux_ioctl_sound(struct thread *td, struct linux_ioctl_args *args)
 			strncpy(info.id, "OSS", sizeof(info.id) - 1);
 			strncpy(info.name, "FreeBSD OSS Mixer", sizeof(info.name) - 1);
 			copyout(&info, (void *)args->arg, sizeof(info));
-			break;
+			return (0);
 		}
 		case 0x0030: {	/* SOUND_OLD_MIXER_INFO */
 			struct linux_old_mixer_info info;
@@ -1757,7 +1757,7 @@ linux_ioctl_sound(struct thread *td, struct linux_ioctl_args *args)
 			strncpy(info.id, "OSS", sizeof(info.id) - 1);
 			strncpy(info.name, "FreeBSD OSS Mixer", sizeof(info.name) - 1);
 			copyout(&info, (void *)args->arg, sizeof(info));
-			break;
+			return (0);
 		}
 		default:
 			return (ENOIOCTL);
@@ -1774,6 +1774,10 @@ linux_ioctl_sound(struct thread *td, struct linux_ioctl_args *args)
 		args->cmd = SOUND_MIXER_READ_STEREODEVS;
 		return (ioctl(td, (struct ioctl_args *)args));
 
+	case LINUX_SOUND_MIXER_READ_CAPS:
+		args->cmd = SOUND_MIXER_READ_CAPS;
+		return (ioctl(td, (struct ioctl_args *)args));
+
 	case LINUX_SOUND_MIXER_READ_RECMASK:
 		args->cmd = SOUND_MIXER_READ_RECMASK;
 		return (ioctl(td, (struct ioctl_args *)args));
diff --git a/sys/compat/linux/linux_ioctl.h b/sys/compat/linux/linux_ioctl.h
index 608db4bddad6..08ccf88954fe 100644
--- a/sys/compat/linux/linux_ioctl.h
+++ b/sys/compat/linux/linux_ioctl.h
@@ -267,6 +267,7 @@
 #define	LINUX_SOUND_MIXER_INFO		0x4d65
 #define	LINUX_OSS_GETVERSION		0x4d76
 #define	LINUX_SOUND_MIXER_READ_STEREODEVS	0x4dfb
+#define	LINUX_SOUND_MIXER_READ_CAPS	0x4dfc
 #define	LINUX_SOUND_MIXER_READ_RECMASK	0x4dfd
 #define	LINUX_SOUND_MIXER_READ_DEVMASK	0x4dfe
 #define	LINUX_SOUND_MIXER_WRITE_RECSRC	0x4dff