diff --git a/src/acpi/dsdt_top.asl b/src/acpi/dsdt_top.asl
index ff148ae..7b9b2d8 100644
--- a/src/acpi/dsdt_top.asl
+++ b/src/acpi/dsdt_top.asl
@@ -31,13 +31,13 @@
 	PICM = Arg0
 }
 
-#if CONFIG(MMCONF_SUPPORT)
+#if CONFIG(ECAM_MMCONF_SUPPORT)
 Scope(\_SB) {
 	/* Base address of PCIe config space */
-	Name(PCBA, CONFIG_MMCONF_BASE_ADDRESS)
+	Name(PCBA, CONFIG_ECAM_MMCONF_BASE_ADDRESS)
 
 	/* Length of PCIe config space, 1MB each bus */
-	Name(PCLN, CONFIG_MMCONF_LENGTH)
+	Name(PCLN, CONFIG_ECAM_MMCONF_LENGTH)
 
 	/* PCIe Configuration Space */
 	OperationRegion(PCFG, SystemMemory, PCBA, PCLN) /* Each bus consumes 1MB */