diff --git a/src/cpu/intel/model_6fx/cache_as_ram.inc b/src/cpu/intel/model_6fx/cache_as_ram.inc
index 2395f4d4fc..d04274046d 100644
--- a/src/cpu/intel/model_6fx/cache_as_ram.inc
+++ b/src/cpu/intel/model_6fx/cache_as_ram.inc
@@ -39,7 +39,7 @@ cache_as_ram:
         movl	%eax, (%esi)
 
 	/* Disable prefetchers */
-	movl	$0x01a0, %eax
+	movl	$0x01a0, %ecx
 	rdmsr
 	orl	$((1 << 9) | (1 << 19)), %eax
 	orl	$((1 << 5) | (1 << 7)), %edx