diff --git a/LDP/guide/docbook/lkmpg-2.6/lkmpg-examples/02-HelloWorld/Makefile.2 b/LDP/guide/docbook/lkmpg-2.6/lkmpg-examples/02-HelloWorld/Makefile.2
index bde2c762..36d6502d 100644
--- a/LDP/guide/docbook/lkmpg-2.6/lkmpg-examples/02-HelloWorld/Makefile.2
+++ b/LDP/guide/docbook/lkmpg-2.6/lkmpg-examples/02-HelloWorld/Makefile.2
@@ -2,7 +2,7 @@ obj-m += hello-1.o
 obj-m += hello-2.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