diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig
index 2a266b9..4fe20ee 100644
--- a/src/northbridge/intel/gm45/Kconfig
+++ b/src/northbridge/intel/gm45/Kconfig
@@ -7,7 +7,7 @@
 	select INTEL_EDID
 	select INTEL_GMA_ACPI
 	select INTEL_GMA_SSC_ALTERNATE_REF
-	select HAVE_EXP_X86_64_SUPPORT
+	select HAVE_X86_64_SUPPORT
 	select USE_DDR3
 	select USE_DDR2
 
diff --git a/src/northbridge/intel/x4x/Kconfig b/src/northbridge/intel/x4x/Kconfig
index 248852e..4bc12af 100644
--- a/src/northbridge/intel/x4x/Kconfig
+++ b/src/northbridge/intel/x4x/Kconfig
@@ -7,7 +7,7 @@
 	select INTEL_GMA_ACPI
 	select CACHE_MRC_SETTINGS
 	select BOOT_DEVICE_SPI_FLASH_NO_EARLY_WRITES
-	select HAVE_EXP_X86_64_SUPPORT
+	select HAVE_X86_64_SUPPORT
 	select USE_DDR3
 	select USE_DDR2