diff --git a/grpc/src/main/java/com/navercorp/pinpoint/grpc/channelz/ChannelzServerTransportFilter.java b/grpc/src/main/java/com/navercorp/pinpoint/grpc/channelz/ChannelzServerTransportFilter.java
index f7760229a8ff..1d1651882dbe 100644
--- a/grpc/src/main/java/com/navercorp/pinpoint/grpc/channelz/ChannelzServerTransportFilter.java
+++ b/grpc/src/main/java/com/navercorp/pinpoint/grpc/channelz/ChannelzServerTransportFilter.java
@@ -49,6 +49,10 @@ private TransportMetadata getTransportMetadata(Attributes transportAttrs) {
 
     @Override
     public void transportTerminated(Attributes transportAttrs) {
+        // transport is not ready
+        if (transportAttrs == null) {
+            return;
+        }
         final TransportMetadata transportMetadata = getTransportMetadata(transportAttrs);
 
         final InetSocketAddress remoteAddress = transportMetadata.getRemoteAddress();