--- a/config.mk
+++ b/config.mk
@@ -95,7 +95,7 @@ ifneq ($(CONFIG_PCI),)
CONFIG_ATH5K=m
# CONFIG_ATH5K_DEBUG is not set
CONFIG_ATH9K=m
-# CONFIG_ATH9K_DEBUG is not set
+CONFIG_ATH9K_DEBUG=y
CONFIG_IWLWIFI=y