diff --git a/src/southbridge/intel/i3100/early_smbus.c b/src/southbridge/intel/i3100/early_smbus.c
index 2cb241a138..35c32a41c1 100644
--- a/src/southbridge/intel/i3100/early_smbus.c
+++ b/src/southbridge/intel/i3100/early_smbus.c
@@ -20,7 +20,7 @@
 
 static void enable_smbus(void)
 {
-	device_t dev = PCI_DEV(0x0, 0x1f, 0x3);
+	pci_devfn_t dev = PCI_DEV(0x0, 0x1f, 0x3);
 
 	printk(BIOS_SPEW, "SMBus controller enabled\n");
 	pci_write_config32(dev, 0x20, SMBUS_IO_BASE | 1);
diff --git a/src/southbridge/intel/i3100/i3100.h b/src/southbridge/intel/i3100/i3100.h
index 85b30b6bc6..297a2a688d 100644
--- a/src/southbridge/intel/i3100/i3100.h
+++ b/src/southbridge/intel/i3100/i3100.h
@@ -36,6 +36,8 @@
 #define SATA_MODE_IDE  0x00
 #define SATA_MODE_AHCI 0x01
 
+#ifndef __SIMPLE_DEVICE__
 void i3100_enable(device_t dev);
+#endif
 
 #endif