diff --git a/.templates/90-config_yaml.sh b/.templates/90-config_yaml.sh
index beb62ee24..66ed5278e 100644
--- a/.templates/90-config_yaml.sh
+++ b/.templates/90-config_yaml.sh
@@ -81,7 +81,7 @@ while IFS= read -r line; do
         # Get text
         secret=$(sed -n "/$secret:/p" /config/secrets.yaml)
         secret=${secret#*: }
-        line="${line%%=*}=$secret"
+        line="${line%%=*}='$secret'"
     fi
     # Data validation
     if [[ $line =~ ^.+[=].+$ ]]; then