diff --git a/src/cpu/amd/car/cache_as_ram.inc b/src/cpu/amd/car/cache_as_ram.inc
index e21462a30b..218a538c35 100644
--- a/src/cpu/amd/car/cache_as_ram.inc
+++ b/src/cpu/amd/car/cache_as_ram.inc
@@ -137,7 +137,7 @@ CAR_FAM10_out:
 
 	/* Erratum 343 end */
 
-#if defined(CONFIG_MMCONF_SUPPORT)
+#if CONFIG_MMCONF_SUPPORT
 	/* Set MMIO Config space BAR */
 	movl	$MSR_MCFG_BASE, %ecx
 	rdmsr