diff --git a/drivers/pnp/isapnp/Makefile b/drivers/pnp/isapnp/Makefile
index cac18bbfb817..3e38f06f8d78 100644
--- a/drivers/pnp/isapnp/Makefile
+++ b/drivers/pnp/isapnp/Makefile
@@ -5,3 +5,7 @@
 isapnp-proc-$(CONFIG_PROC_FS) = proc.o
 
 obj-y := core.o compat.o $(isapnp-proc-y)
+
+ifeq ($(CONFIG_PNP_DEBUG),y)
+EXTRA_CFLAGS += -DDEBUG
+endif
diff --git a/drivers/pnp/pnpacpi/Makefile b/drivers/pnp/pnpacpi/Makefile
index 905326fcca85..2d7a1e6908be 100644
--- a/drivers/pnp/pnpacpi/Makefile
+++ b/drivers/pnp/pnpacpi/Makefile
@@ -3,3 +3,7 @@
 #
 
 obj-y := core.o rsparser.o
+
+ifeq ($(CONFIG_PNP_DEBUG),y)
+EXTRA_CFLAGS += -DDEBUG
+endif
diff --git a/drivers/pnp/pnpbios/Makefile b/drivers/pnp/pnpbios/Makefile
index 3cd3ed760605..310e2b3a7710 100644
--- a/drivers/pnp/pnpbios/Makefile
+++ b/drivers/pnp/pnpbios/Makefile
@@ -5,3 +5,7 @@
 pnpbios-proc-$(CONFIG_PNPBIOS_PROC_FS) = proc.o
 
 obj-y := core.o bioscalls.o rsparser.o $(pnpbios-proc-y)
+
+ifeq ($(CONFIG_PNP_DEBUG),y)
+EXTRA_CFLAGS += -DDEBUG
+endif