diff --git a/hw/arm/nseries.c b/hw/arm/nseries.c
index c7ebaa6..4d7be5e 100644
--- a/hw/arm/nseries.c
+++ b/hw/arm/nseries.c
@@ -1344,7 +1344,7 @@ static void n8x0_init(MachineState *machine,
     n8x0_dss_setup(s);
     n8x0_cbus_setup(s);
     n8x0_uart_setup(s);
-    if (usb_enabled(false)) {
+    if (usb_enabled()) {
         n8x0_usb_setup(s);
     }
 
diff --git a/hw/arm/pxa2xx.c b/hw/arm/pxa2xx.c
index 8967cc4..165ba2a 100644
--- a/hw/arm/pxa2xx.c
+++ b/hw/arm/pxa2xx.c
@@ -2143,7 +2143,7 @@ PXA2xxState *pxa270_init(MemoryRegion *address_space,
         s->ssp[i] = (SSIBus *)qdev_get_child_bus(dev, "ssi");
     }
 
-    if (usb_enabled(false)) {
+    if (usb_enabled()) {
         sysbus_create_simple("sysbus-ohci", 0x4c000000,
                         qdev_get_gpio_in(s->pic, PXA2XX_PIC_USBH1));
     }
@@ -2276,7 +2276,7 @@ PXA2xxState *pxa255_init(MemoryRegion *address_space, unsigned int sdram_size)
         s->ssp[i] = (SSIBus *)qdev_get_child_bus(dev, "ssi");
     }
 
-    if (usb_enabled(false)) {
+    if (usb_enabled()) {
         sysbus_create_simple("sysbus-ohci", 0x4c000000,
                         qdev_get_gpio_in(s->pic, PXA2XX_PIC_USBH1));
     }
diff --git a/hw/arm/realview.c b/hw/arm/realview.c
index 66e51ef..50cb93d 100644
--- a/hw/arm/realview.c
+++ b/hw/arm/realview.c
@@ -261,7 +261,7 @@ static void realview_init(MachineState *machine,
         sysbus_connect_irq(busdev, 2, pic[50]);
         sysbus_connect_irq(busdev, 3, pic[51]);
         pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");
-        if (usb_enabled(false)) {
+        if (usb_enabled()) {
             pci_create_simple(pci_bus, -1, "pci-ohci");
         }
         n = drive_get_max_bus(IF_SCSI);
diff --git a/hw/arm/versatilepb.c b/hw/arm/versatilepb.c
index 6c4c2e7..b1dae77 100644
--- a/hw/arm/versatilepb.c
+++ b/hw/arm/versatilepb.c
@@ -281,7 +281,7 @@ static void versatile_init(MachineState *machine, int board_id)
             pci_nic_init_nofail(nd, pci_bus, "rtl8139", NULL);
         }
     }
-    if (usb_enabled(false)) {
+    if (usb_enabled()) {
         pci_create_simple(pci_bus, -1, "pci-ohci");
     }
     n = drive_get_max_bus(IF_SCSI);
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 220f741..f0a3201 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -274,7 +274,7 @@ static void pc_init1(MachineState *machine,
     pc_cmos_init(below_4g_mem_size, above_4g_mem_size, machine->boot_order,
                  machine, floppy, idebus[0], idebus[1], rtc_state);
 
-    if (pci_enabled && usb_enabled(false)) {
+    if (pci_enabled && usb_enabled()) {
         pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
     }
 
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 7ba0535..a432944 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -265,7 +265,7 @@ static void pc_q35_init(MachineState *machine)
     ide_drive_get(hd, ICH_AHCI(ahci)->ahci.ports);
     ahci_ide_create_devs(ahci, hd);
 
-    if (usb_enabled(false)) {
+    if (usb_enabled()) {
         /* Should we create 6 UHCI according to ich9 spec? */
         ehci_create_ich9_with_companions(host_bus, 0x1d);
     }
diff --git a/hw/ppc/mac_newworld.c b/hw/ppc/mac_newworld.c
index 8ba9499..ed37d6b 100644
--- a/hw/ppc/mac_newworld.c
+++ b/hw/ppc/mac_newworld.c
@@ -418,7 +418,7 @@ static void ppc_core99_init(MachineState *machine)
     qdev_init_nofail(dev);
 
     if ((machine_arch == ARCH_MAC99_U3 && defaults_enabled()) ||
-        usb_enabled(false)) {
+        usb_enabled()) {
         pci_create_simple(pci_bus, -1, "pci-ohci");
         /* U3 needs to use USB for input because Linux doesn't support via-cuda
         on PPC64 */
diff --git a/hw/ppc/mac_oldworld.c b/hw/ppc/mac_oldworld.c
index c7224d7..3079510 100644
--- a/hw/ppc/mac_oldworld.c
+++ b/hw/ppc/mac_oldworld.c
@@ -304,7 +304,7 @@ static void ppc_heathrow_init(MachineState *machine)
     dev = qdev_create(adb_bus, TYPE_ADB_MOUSE);
     qdev_init_nofail(dev);
 
-    if (usb_enabled(false)) {
+    if (usb_enabled()) {
         pci_create_simple(pci_bus, -1, "pci-ohci");
     }
 
diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c
index dd8433d..15df7f3 100644
--- a/hw/ppc/prep.c
+++ b/hw/ppc/prep.c
@@ -539,7 +539,7 @@ static void ppc_prep_init(MachineState *machine)
     memory_region_add_subregion(sysmem, 0xFEFF0000, xcsr);
 #endif
 
-    if (usb_enabled(false)) {
+    if (usb_enabled()) {
         pci_create_simple(pci_bus, -1, "pci-ohci");
     }
 
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 2b2cc0c..d2b8b12 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1530,7 +1530,7 @@ static void ppc_spapr_init(MachineState *machine)
         spapr->has_graphics = true;
     }
 
-    if ((spapr->has_graphics && defaults_enabled()) || usb_enabled(false)) {
+    if ((spapr->has_graphics && defaults_enabled()) || usb_enabled()) {
         pci_create_simple(phb->bus, -1, "pci-ohci");
         if (spapr->has_graphics) {
             usbdevice_create("keyboard");
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index a31044c..748d059 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -228,7 +228,7 @@ void qemu_boot_set(const char *boot_order, Error **errp);
 QemuOpts *qemu_get_machine_opts(void);
 
 bool defaults_enabled(void);
-bool usb_enabled(bool default_usb);
+bool usb_enabled(void);
 
 extern QemuOptsList qemu_legacy_drive_opts;
 extern QemuOptsList qemu_common_drive_opts;
diff --git a/vl.c b/vl.c
index 415535f..7786b2f 100644
--- a/vl.c
+++ b/vl.c
@@ -1002,10 +1002,9 @@ bool defaults_enabled(void)
     return has_defaults;
 }
 
-bool usb_enabled(bool default_usb)
+bool usb_enabled(void)
 {
-    return qemu_opt_get_bool(qemu_get_machine_opts(), "usb",
-                             default_usb);
+    return machine_usb(current_machine);
 }
 
 #ifndef _WIN32
@@ -1229,7 +1228,7 @@ static int usb_device_add(const char *devname)
     const char *p;
 #endif
 
-    if (!usb_enabled(false)) {
+    if (!usb_enabled()) {
         return -1;
     }
 
@@ -1261,7 +1260,7 @@ static int usb_device_del(const char *devname)
         return -1;
     }
 
-    if (!usb_enabled(false)) {
+    if (!usb_enabled()) {
         return -1;
     }
 
@@ -4230,7 +4229,7 @@ int main(int argc, char **argv, char **envp)
     set_numa_modes();
 
     /* init USB devices */
-    if (usb_enabled(false)) {
+    if (usb_enabled()) {
         if (foreach_device_config(DEV_USB, usb_parse) < 0)
             exit(1);
     }
