diff --git a/pom.xml b/pom.xml
index 35604f71c..7f544d500 100644
--- a/pom.xml
+++ b/pom.xml
@@ -152,6 +152,11 @@
                         <format>xml</format>
                         <format>html</format>
                     </formats>
+                    <instrumentation>
+                        <excludes>
+                            <exclude>com/a/eye/skywalking/trace/proto/*.class</exclude>
+                        </excludes>
+                    </instrumentation>
                 </configuration>
             </plugin>
         </plugins>
diff --git a/skywalking-commons/skywalking-trace/pom.xml b/skywalking-commons/skywalking-trace/pom.xml
index 20d851d21..b0a8b6e6e 100644
--- a/skywalking-commons/skywalking-trace/pom.xml
+++ b/skywalking-commons/skywalking-trace/pom.xml
@@ -39,11 +39,6 @@
             </extension>
         </extensions>
         <plugins>
-            <plugin>
-                <groupId>org.codehaus.mojo</groupId>
-                <artifactId>build-helper-maven-plugin</artifactId>
-                <version>3.0.0</version>
-            </plugin>
             <plugin>
                 <groupId>org.xolstice.maven.plugins</groupId>
                 <artifactId>protobuf-maven-plugin</artifactId>