diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c
index 62058e9c8b4e..829415208ff8 100644
--- a/arch/x86/kernel/microcode_amd.c
+++ b/arch/x86/kernel/microcode_amd.c
@@ -263,21 +263,20 @@ static void * get_next_ucode(u8 *buf, unsigned int size,
 			unsigned int *mc_size)
 {
 	unsigned int total_size;
-#define UCODE_UNKNOWN_HDR	8
-	u8 hdr[UCODE_UNKNOWN_HDR];
+#define UCODE_CONTAINER_SECTION_HDR	8
+	u8 section_hdr[UCODE_CONTAINER_SECTION_HDR];
 	void *mc;
 
-	if (get_ucode_data(hdr, buf, UCODE_UNKNOWN_HDR))
+	if (get_ucode_data(section_hdr, buf, UCODE_CONTAINER_SECTION_HDR))
 		return NULL;
 
-	if (hdr[0] != UCODE_UCODE_TYPE) {
+	if (section_hdr[0] != UCODE_UCODE_TYPE) {
 		printk(KERN_ERR "microcode: error! "
 		       "Wrong microcode payload type field\n");
 		return NULL;
 	}
 
-	/* FIXME! dimm: Why not by means of get_totalsize(hdr)? */
-	total_size = (unsigned long) (hdr[4] + (hdr[5] << 8));
+	total_size = (unsigned long) (section_hdr[4] + (section_hdr[5] << 8));
 
 	printk(KERN_INFO "microcode: size %u, total_size %u\n",
 		size, total_size);
@@ -290,13 +289,13 @@ static void * get_next_ucode(u8 *buf, unsigned int size,
 	mc = vmalloc(UCODE_MAX_SIZE);
 	if (mc) {
 		memset(mc, 0, UCODE_MAX_SIZE);
-		if (get_ucode_data(mc, buf + UCODE_UNKNOWN_HDR, total_size)) {
+		if (get_ucode_data(mc, buf + UCODE_CONTAINER_SECTION_HDR, total_size)) {
 			vfree(mc);
 			mc = NULL;
 		} else
-			*mc_size = total_size + UCODE_UNKNOWN_HDR;
+			*mc_size = total_size + UCODE_CONTAINER_SECTION_HDR;
 	}
-#undef UCODE_UNKNOWN_HDR
+#undef UCODE_CONTAINER_SECTION_HDR
 	return mc;
 }