diff --git a/flash.h b/flash.h
index 27b6328..e25f31e 100644
--- a/flash.h
+++ b/flash.h
@@ -585,6 +585,7 @@
 void physunmap(void *virt_addr, size_t len);
 
 /* internal.c */
+void get_io_perms(void);
 int internal_init(void);
 int internal_shutdown(void);
 void internal_chip_writeb(uint8_t val, volatile void *addr);
diff --git a/internal.c b/internal.c
index 2f9ba17..bbbf58b 100644
--- a/internal.c
+++ b/internal.c
@@ -102,7 +102,7 @@
 {
 	int ret = 0;
 
-	get_io_perms(void);
+	get_io_perms();
 
 	/* Initialize PCI access for flash enables */
 	pacc = pci_alloc();	/* Get the pci_access structure */
diff --git a/nic3com.c b/nic3com.c
index a60f594..a982267 100644
--- a/nic3com.c
+++ b/nic3com.c
@@ -158,7 +158,7 @@
 
 void nic3com_chip_writeb(uint8_t val, volatile void *addr)
 {
-	OUTL((uint32_t)addr, io_base_addr + BIOS_ROM_ADDR);
+	OUTL((uint32_t)(intptr_t)addr, io_base_addr + BIOS_ROM_ADDR);
 	OUTB(val, io_base_addr + BIOS_ROM_DATA);
 }
 
@@ -174,7 +174,7 @@
 {
 	uint8_t val;
 
-	OUTL((uint32_t)addr, io_base_addr + BIOS_ROM_ADDR);
+	OUTL((uint32_t)(intptr_t)addr, io_base_addr + BIOS_ROM_ADDR);
 	val = INB(io_base_addr + BIOS_ROM_DATA);
 
 	return val;