diff --git a/docs/en/guides/How-to-build.md b/docs/en/guides/How-to-build.md
index 59823be98938c463c7ef248e599c3f9cef59dedc..203d64701ae543f12ff9d22ce2be44dde7802baa 100644
--- a/docs/en/guides/How-to-build.md
+++ b/docs/en/guides/How-to-build.md
@@ -133,6 +133,6 @@ Refer to [Build docker image](../../../docker) for more details.
 </dependency>
 ```
 5. Run `./mvnw compile -Dmaven.test.skip=true`
-6. Run `maven update`. Must remove the clean projects item before maven update(This will be clear the proto conversion Java file generated by the complie)
+6. Run `maven update`. Must remove the clean projects item before maven update(This will be clear the proto conversion Java file generated by the compiling)
 7. Run `./mvnw compile` compile collector-remote-grpc-provider and apm-protocol
 8. Refresh project
diff --git a/oap-server/server-library/library-module/src/main/java/org/apache/skywalking/oap/server/library/module/ModuleProvider.java b/oap-server/server-library/library-module/src/main/java/org/apache/skywalking/oap/server/library/module/ModuleProvider.java
index 22015843cb8cafaa2b1fa20562f194b1f8c38eef..684e27b5e371b00b22acbaab88eb78633c99d23a 100644
--- a/oap-server/server-library/library-module/src/main/java/org/apache/skywalking/oap/server/library/module/ModuleProvider.java
+++ b/oap-server/server-library/library-module/src/main/java/org/apache/skywalking/oap/server/library/module/ModuleProvider.java
@@ -76,7 +76,7 @@ public abstract class ModuleProvider implements ModuleServiceHolder {
     public abstract String[] requiredModules();
 
     /**
-     * Register a implementation for the service of this moduleDefine provider.
+     * Register an implementation for the service of this moduleDefine provider.
      */
     @Override public final void registerServiceImplementation(Class<? extends Service> serviceType,
         Service service) throws ServiceNotProvidedException {