diff --git a/arch/x86/pci/Makefile b/arch/x86/pci/Makefile
index 56d917b556c6..d8a0a6279a4d 100644
--- a/arch/x86/pci/Makefile
+++ b/arch/x86/pci/Makefile
@@ -16,3 +16,7 @@ obj-$(CONFIG_X86_NUMAQ)		+= numaq_32.o
 obj-y				+= common.o early.o
 obj-y				+= amd_bus.o
 obj-$(CONFIG_X86_64)		+= intel_bus.o
+
+ifeq ($(CONFIG_PCI_DEBUG),y)
+EXTRA_CFLAGS += -DDEBUG
+endif