diff --git a/chipdrivers.h b/chipdrivers.h
index e2c698b..e7261e0 100644
--- a/chipdrivers.h
+++ b/chipdrivers.h
@@ -46,7 +46,7 @@
 int spi_chip_read(struct flashchip *flash, uint8_t *buf, int start, int len);
 uint8_t spi_read_status_register(void);
 int spi_disable_blockprotect(void);
-int spi_byte_program(int addr, uint8_t byte);
+int spi_byte_program(int addr, uint8_t databyte);
 int spi_nbyte_program(int addr, uint8_t *bytes, int len);
 int spi_nbyte_read(int addr, uint8_t *bytes, int len);
 int spi_read_chunked(struct flashchip *flash, uint8_t *buf, int start, int len, int chunksize);
diff --git a/chipset_enable.c b/chipset_enable.c
index f106f96..0f42c7f 100644
--- a/chipset_enable.c
+++ b/chipset_enable.c
@@ -1026,19 +1026,19 @@
 
 static int enable_flash_mcp55(struct pci_dev *dev, const char *name)
 {
-	uint8_t old, new, byte;
-	uint16_t word;
+	uint8_t old, new, val;
+	uint16_t wordval;
 
 	/* Set the 0-16 MB enable bits. */
-	byte = pci_read_byte(dev, 0x88);
-	byte |= 0xff;		/* 256K */
-	pci_write_byte(dev, 0x88, byte);
-	byte = pci_read_byte(dev, 0x8c);
-	byte |= 0xff;		/* 1M */
-	pci_write_byte(dev, 0x8c, byte);
-	word = pci_read_word(dev, 0x90);
-	word |= 0x7fff;		/* 16M */
-	pci_write_word(dev, 0x90, word);
+	val = pci_read_byte(dev, 0x88);
+	val |= 0xff;		/* 256K */
+	pci_write_byte(dev, 0x88, val);
+	val = pci_read_byte(dev, 0x8c);
+	val |= 0xff;		/* 1M */
+	pci_write_byte(dev, 0x8c, val);
+	wordval = pci_read_word(dev, 0x90);
+	wordval |= 0x7fff;	/* 16M */
+	pci_write_word(dev, 0x90, wordval);
 
 	old = pci_read_byte(dev, 0x6d);
 	new = old | 0x01;
diff --git a/spi.c b/spi.c
index 43dc4bf..952952f 100644
--- a/spi.c
+++ b/spi.c
@@ -832,7 +832,7 @@
 	return result;
 }
 
-int spi_byte_program(int addr, uint8_t byte)
+int spi_byte_program(int addr, uint8_t databyte)
 {
 	int result;
 	struct spi_command cmds[] = {
@@ -843,7 +843,7 @@
 		.readarr	= NULL,
 	}, {
 		.writecnt	= JEDEC_BYTE_PROGRAM_OUTSIZE,
-		.writearr	= (const unsigned char[]){ JEDEC_BYTE_PROGRAM, (addr >> 16) & 0xff, (addr >> 8) & 0xff, (addr & 0xff), byte },
+		.writearr	= (const unsigned char[]){ JEDEC_BYTE_PROGRAM, (addr >> 16) & 0xff, (addr >> 8) & 0xff, (addr & 0xff), databyte },
 		.readcnt	= 0,
 		.readarr	= NULL,
 	}, {