diff --git a/drivers/virtio-scsi.cc b/drivers/virtio-scsi.cc
index c60306395c73245edd77fb02894fc215405d1b6d..d57e905c054bdf01a31e964f7919293b981f09ba 100644
--- a/drivers/virtio-scsi.cc
+++ b/drivers/virtio-scsi.cc
@@ -314,7 +314,7 @@ void scsi::add_lun(u16 target, u16 lun)
 }
 
 
-void scsi::scan(void)
+void scsi::scan()
 {
     /* TODO: Support more target */
     for (u16 target = 0; target < 1; target++) {
@@ -456,10 +456,10 @@ int scsi::make_request(struct bio* bio)
     return 0;
 }
 
-u32 scsi::get_driver_features(void)
+u32 scsi::get_driver_features()
 {
     auto base = virtio_driver::get_driver_features();
-    return (base | ( 1 << VIRTIO_SCSI_F_INOUT));
+    return base | ( 1 << VIRTIO_SCSI_F_INOUT);
 }
 
 hw_driver* scsi::probe(hw_device* dev)
diff --git a/drivers/virtio-scsi.hh b/drivers/virtio-scsi.hh
index e3b5c6d73df3677a0a3535068d279701adbe7c32..58fb08806a88a604707613bca195191b9ee6397c 100644
--- a/drivers/virtio-scsi.hh
+++ b/drivers/virtio-scsi.hh
@@ -120,10 +120,10 @@ public:
     explicit scsi(pci::device& dev);
     virtual ~scsi();
 
-    virtual const std::string get_name(void) { return _driver_name; }
+    virtual const std::string get_name() { return _driver_name; }
     bool read_config();
 
-    virtual u32 get_driver_features(void);
+    virtual u32 get_driver_features();
 
     static struct scsi_priv *get_priv(struct bio *bio) {
         return reinterpret_cast<struct scsi_priv*>(bio->bio_dev->private_data);
@@ -138,7 +138,7 @@ public:
     std::vector<u16> exec_report_luns(u16 target);
     void add_lun(u16 target_id, u16 lun_id);
     void exec_read_capacity(u16 target, u16 lun, size_t &devsize);
-    void scan(void);
+    void scan();
 
     int exec_readwrite(struct bio *bio, u8 cmd);
     int exec_synccache(struct bio *bio, u8 cmd);