diff --git a/chapter08/openrc.xml b/chapter08/openrc.xml
index 4bba8582a..4a4878d05 100644
--- a/chapter08/openrc.xml
+++ b/chapter08/openrc.xml
@@ -43,7 +43,7 @@
 
     <para>Fix a script to allow a normal installation:</para>
 
-<screen remap="pre"><userinput>sed -i '/set\ -u/d' tools/meson_final.sh</userinput></screen>
+<screen remap="pre"><userinput>sed -i '/set -u/d' tools/meson_final.sh</userinput></screen>
 
     <para>Prepare OpenRC for compilation:</para>
 
diff --git a/chapter09/usage.xml b/chapter09/usage.xml
index efba5c5c0..beaa8a193 100644
--- a/chapter09/usage.xml
+++ b/chapter09/usage.xml
@@ -91,7 +91,7 @@
   services:</para>
 
 <screen><userinput>for i in $(seq 1 6); do
-  ln -sv agetty /etc/init.d/agetty.tty$i
+  ln -sfv agetty /etc/init.d/agetty.tty$i
   rc-update add agetty.tty$i default
 done</userinput></screen>
 
@@ -148,6 +148,7 @@ start()
 }</literal>
 EOF
 
+chmod +x /etc/init.d/udevd
 rc-update add udevd boot</userinput></screen>
 
     <para>