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 8e9e65974..78597ea5b 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
@@ -116,7 +116,7 @@ public abstract class ModuleProvider {
         }
     }
 
-    @SuppressWarnings("unchecked") <T extends Service> T getService(
+    public @SuppressWarnings("unchecked") <T extends Service> T getService(
         Class<T> serviceType) throws ServiceNotProvidedException {
         Service serviceImpl = services.get(serviceType);
         if (serviceImpl != null) {