diff --git a/opennebula-images/debian-build-opennebula-image.sh b/opennebula-images/debian-build-opennebula-image.sh
index 577f573..d18e349 100755
--- a/opennebula-images/debian-build-opennebula-image.sh
+++ b/opennebula-images/debian-build-opennebula-image.sh
@@ -148,7 +148,7 @@ run_root apt-get -y install haveged
 run_root systemctl enable haveged.service
 
 # Generate locales.
-run_root sed -i 's/^# *\(en_GB.UTF-8\)/\1/' /etc/locale.gen
+run_root 'sed -i "s/^# *\(en_GB.UTF-8\)/\1/" etc/locale.gen'
 run_root locale-gen
 
 # Generate fstab file.