diff --git a/sys/i386/include/legacyvar.h b/sys/i386/include/legacyvar.h
index 5ab7b3567238..0b0fa4339491 100644
--- a/sys/i386/include/legacyvar.h
+++ b/sys/i386/include/legacyvar.h
@@ -43,12 +43,12 @@ LEGACY_ACCESSOR(pcibus,			PCIBUS,		uint32_t)
 #undef LEGACY_ACCESSOR
 
 int	legacy_pcib_maxslots(device_t dev);
-uint32_t legacy_pcib_read_config(device_t dev, int bus, int slot, int func,
-    int reg, int bytes);
+uint32_t legacy_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func,
+    u_int reg, int bytes);
 int	legacy_pcib_read_ivar(device_t dev, device_t child, int which,
     uintptr_t *result);
-void	legacy_pcib_write_config(device_t dev, int bus, int slot, int func,
-    int reg, u_int32_t data, int bytes);
+void	legacy_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func,
+    u_int reg, u_int32_t data, int bytes);
 int	legacy_pcib_write_ivar(device_t dev, device_t child, int which,
     uintptr_t value);
 struct resource *legacy_pcib_alloc_resource(device_t dev, device_t child,
diff --git a/sys/i386/pci/pci_bus.c b/sys/i386/pci/pci_bus.c
index e0c8fbdcdc32..0a82bfffb282 100644
--- a/sys/i386/pci/pci_bus.c
+++ b/sys/i386/pci/pci_bus.c
@@ -62,8 +62,8 @@ legacy_pcib_maxslots(device_t dev)
 /* read configuration space register */
 
 u_int32_t
-legacy_pcib_read_config(device_t dev, int bus, int slot, int func,
-			int reg, int bytes)
+legacy_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func,
+			u_int reg, int bytes)
 {
 	return(pci_cfgregread(bus, slot, func, reg, bytes));
 }
@@ -71,8 +71,8 @@ legacy_pcib_read_config(device_t dev, int bus, int slot, int func,
 /* write configuration space register */
 
 void
-legacy_pcib_write_config(device_t dev, int bus, int slot, int func,
-			 int reg, u_int32_t data, int bytes)
+legacy_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func,
+			 u_int reg, u_int32_t data, int bytes)
 {
 	pci_cfgregwrite(bus, slot, func, reg, data, bytes);
 }