diff --git a/.templates/01-config_yaml.sh b/.templates/01-config_yaml.sh
index d508a9d4a..205002848 100755
--- a/.templates/01-config_yaml.sh
+++ b/.templates/01-config_yaml.sh
@@ -111,7 +111,7 @@ fi
 # Check if there are lines to read
 cp "$CONFIGSOURCE" /tempenv
 sed -i '/^#/d' /tempenv
-sed -i '/^ /d' /tempenv
+sed -i '/^[[:space:]]*$/d' /tempenv
 sed -i '/^$/d' /tempenv
 # Exit if empty
 if [ ! -s /tempenv ]; then