diff --git a/src/northbridge/amd/amdk8/raminit_f.c b/src/northbridge/amd/amdk8/raminit_f.c
index 419b3b437f..b24ef82b7f 100644
--- a/src/northbridge/amd/amdk8/raminit_f.c
+++ b/src/northbridge/amd/amdk8/raminit_f.c
@@ -1655,7 +1655,7 @@ static uint8_t get_exact_divisor(int i, uint8_t divisor)
 
 	/* Check for FID control support */
 	struct cpuid_result cpuid1;
-	cpuid1 = cpuid(0x8000007);
+	cpuid1 = cpuid(0x80000007);
 	if( cpuid1.edx & 0x02 ) {
 		/* Use current FID */
 		unsigned fid_cur;
diff --git a/src/northbridge/amd/amdk8/raminit_f_dqs.c b/src/northbridge/amd/amdk8/raminit_f_dqs.c
index 2ba51eff3d..b110480e7c 100644
--- a/src/northbridge/amd/amdk8/raminit_f_dqs.c
+++ b/src/northbridge/amd/amdk8/raminit_f_dqs.c
@@ -426,7 +426,7 @@ static uint16_t get_exact_T1000(unsigned i)
 
 	/* Check for FID control support */
 	struct cpuid_result cpuid1;
-	cpuid1 = cpuid(0x8000007);
+	cpuid1 = cpuid(0x80000007);
 	if( cpuid1.edx & 0x02 ) {
 		/* Use current FID */
 		unsigned fid_cur;