diff --git a/LDP/guide/docbook/lkmpg-2.6/lkmpg-examples/02-HelloWorld/Makefile.1 b/LDP/guide/docbook/lkmpg-2.6/lkmpg-examples/02-HelloWorld/Makefile.1
index fbd8a058..b59ac4f6 100644
--- a/LDP/guide/docbook/lkmpg-2.6/lkmpg-examples/02-HelloWorld/Makefile.1
+++ b/LDP/guide/docbook/lkmpg-2.6/lkmpg-examples/02-HelloWorld/Makefile.1
@@ -1,7 +1,7 @@
 obj-m += hello-1.o
 
 all:
-	make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
+	make -C /lib/modules/$(shell uname -r)/build M=$(shell pwd) modules
 
 clean:
-	make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
+	make -C /lib/modules/$(shell uname -r)/build M=$(shell pwd) clean