diff --git a/spcd/bootstrap.sh b/spcd/bootstrap.sh
index c25df3d..189dc15 100644
--- a/spcd/bootstrap.sh
+++ b/spcd/bootstrap.sh
@@ -856,15 +856,16 @@ spcd_query_package() {
 
 spcd_step__dns() {
     spcd_step "DNS"
+    local index value text
     while true; do
-        spcd_sdr__index=$((spcd_sdr__index + 1))
-        eval "spcd_sdr__value=\"\${SPCD_DNS_${spcd_sdr__index}}\""
-        [ -n "${spcd_sdr__value}" ] || break
-        spcd_sdr__text="${spcd_sdr__text}\
-nameserver ${spcd_sdr__value}
+        index=$((index + 1))
+        eval "value=\"\${SPCD_DNS_${index}}\""
+        [ -n "${value}" ] || break
+        text="${text}\
+nameserver ${value}
 "
     done
-    spcd_os_write "/etc/resolv.conf" "${spcd_sdr__text}"
+    spcd_os_write "/etc/resolv.conf" "${text}"
 }
 
 # ╭──────┬──────────╮