diff --git a/Dockerfile b/Dockerfile
index 6efa651..988bda6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -43,9 +43,9 @@ RUN apk add --no-cache ca-certificates dcron tzdata hiredis libevent dnscrypt-pr
     mv /usr/sbin/named.cache /etc/unbound/named.cache &&           \
     adduser -D -H unbound &&\
     mv /usr/sbin/repositories /etc/apk/repositories
-# ARG DEVLOG_SW
+ARG DEVLOG_SW
 ENV TZ=Asia/Shanghai \
-    # DEVLOG=$DEVLOG_SW \
+    DEVLOG=$DEVLOG_SW \
     UPDATE=weekly \
     DNS_SERVERNAME=PaoPaoDNS,blog.03k.org \
     DNSPORT=53 \
diff --git a/src/debug.sh b/src/debug.sh
index 219b137..205cbb0 100644
--- a/src/debug.sh
+++ b/src/debug.sh
@@ -140,21 +140,21 @@ if echo "$test_unbound_raw" | grep -v "refused" | grep -qEo "$IPREX4"; then
     echo "$test_unbound_raw"
 else
     echo unbound_raw FAILED.
-    blank
-    echo "[TEST]Run unbound trace test..."
-    # if [ "$DEVLOG" = "yes" ]; then
-    echo kill unbound and reload to debug mode...
-    unbound_id=$(ps | grep -v "grep" | grep "unbound_raw" | grep -Eo "[0-9]+" | head -1)
-    kill "$unbound_id"
-    sed -i "s/verbosity:.*/verbosity: 2/g" /tmp/unbound_raw.conf
-    unbound -c /tmp/unbound_raw.conf -p -d &
-    # fi
-    dig www.jd.com @127.0.0.1 -p5301
-    dig www.taobao.com @127.0.0.1 -p5301
-    unbound_id=$(ps | grep -v "grep" | grep "unbound_raw" | grep -Eo "[0-9]+" | head -1)
-    kill "$unbound_id"
-    sed -i "s/verbosity:.*/verbosity: 0/g" /tmp/unbound_raw.conf
-    unbound -c /tmp/unbound_raw.conf -p
+    if [ "$DEVLOG" = "yes" ]; then
+        blank
+        echo "[TEST]Run unbound trace test..."
+        echo kill unbound and reload to debug mode...
+        unbound_id=$(ps | grep -v "grep" | grep "unbound_raw" | grep -Eo "[0-9]+" | head -1)
+        kill "$unbound_id"
+        sed -i "s/verbosity:.*/verbosity: 2/g" /tmp/unbound_raw.conf
+        unbound -c /tmp/unbound_raw.conf -p -d &
+        dig www.jd.com @127.0.0.1 -p5301
+        dig www.taobao.com @127.0.0.1 -p5301
+        unbound_id=$(ps | grep -v "grep" | grep "unbound_raw" | grep -Eo "[0-9]+" | head -1)
+        kill "$unbound_id"
+        sed -i "s/verbosity:.*/verbosity: 0/g" /tmp/unbound_raw.conf
+        unbound -c /tmp/unbound_raw.conf -p
+    fi
     blank
 fi
 #sleep 3
diff --git a/src/ub_trace.sh b/src/ub_trace.sh
index b48df4a..fe61909 100644
--- a/src/ub_trace.sh
+++ b/src/ub_trace.sh
@@ -6,7 +6,7 @@ echo "[TEST]Run unbound trace test..."
 echo kill unbound and reload to debug mode...
 unbound_id=$(ps | grep -v "grep" | grep "unbound_raw" | grep -Eo "[0-9]+" | head -1)
 kill "$unbound_id"
-sed -i "s/verbosity:.*/verbosity: 5/g" /tmp/unbound_raw.conf
+sed -i "s/verbosity:.*/verbosity: 4/g" /tmp/unbound_raw.conf
 unbound -c /tmp/unbound_raw.conf -p -d -v &
 dig www.jd.com @127.0.0.1 -p5301
 dig www.taobao.com @127.0.0.1 -p5301