diff --git a/ubuntu/fs/aufs/Makefile b/ubuntu/fs/aufs/Makefile
index 8d80085..42a2e97 100644
--- a/ubuntu/fs/aufs/Makefile
+++ b/ubuntu/fs/aufs/Makefile
@@ -1,6 +1,8 @@
 #!/usr/bin/make -f
 # Makefile for building the aufs module in Debian

+KSRC=$(PWD)
+
 # Parts from conf.mk
 # Configuration for aufs in Debian
 export CONFIG_AUFS                = m