--- a/Plugins/Engine/OrthancPlugins.h	Mon Mar 16 12:33:28 2020 +0100
+++ b/Plugins/Engine/OrthancPlugins.h	Mon Mar 16 14:12:20 2020 +0100
@@ -239,20 +239,20 @@
                         const Arguments& headers,
                         const GetArguments& getArguments,
                         const void* bodyData,
-                        size_t bodySize);
+                        size_t bodySize) ORTHANC_OVERRIDE;
 
     virtual bool InvokeService(SharedLibrary& plugin,
                                _OrthancPluginService service,
-                               const void* parameters);
+                               const void* parameters) ORTHANC_OVERRIDE;
 
-    virtual void SignalChange(const ServerIndexChange& change);
-
+    virtual void SignalChange(const ServerIndexChange& change) ORTHANC_OVERRIDE;
+    
     virtual void SignalStoredInstance(const std::string& instanceId,
                                       DicomInstanceToStore& instance,
-                                      const Json::Value& simplifiedTags);
+                                      const Json::Value& simplifiedTags) ORTHANC_OVERRIDE;
 
     virtual bool FilterIncomingInstance(const DicomInstanceToStore& instance,
-                                        const Json::Value& simplified)
+                                        const Json::Value& simplified) ORTHANC_OVERRIDE
     {
       return true; // TODO Enable filtering of instances from plugins
     }
@@ -302,7 +302,7 @@
 
     bool HasWorklistHandler();
 
-    virtual IWorklistRequestHandler* ConstructWorklistRequestHandler();
+    virtual IWorklistRequestHandler* ConstructWorklistRequestHandler() ORTHANC_OVERRIDE;
 
     bool HasCustomImageDecoder();
 
@@ -315,22 +315,22 @@
 
     virtual ImageAccessor* Decode(const void* dicom,
                                   size_t size,
-                                  unsigned int frame);
+                                  unsigned int frame) ORTHANC_OVERRIDE;
 
     virtual bool IsAllowed(HttpMethod method,
                            const char* uri,
                            const char* ip,
                            const char* username,
                            const IHttpHandler::Arguments& httpHeaders,
-                           const IHttpHandler::GetArguments& getArguments);
+                           const IHttpHandler::GetArguments& getArguments) ORTHANC_OVERRIDE;
 
     bool HasFindHandler();
 
-    virtual IFindRequestHandler* ConstructFindRequestHandler();
+    virtual IFindRequestHandler* ConstructFindRequestHandler() ORTHANC_OVERRIDE;
 
     bool HasMoveHandler();
 
-    virtual IMoveRequestHandler* ConstructMoveRequestHandler();
+    virtual IMoveRequestHandler* ConstructMoveRequestHandler() ORTHANC_OVERRIDE;
 
     IJob* UnserializeJob(const std::string& type,
                          const Json::Value& value);
@@ -344,7 +344,7 @@
                                             const char* username,
                                             HttpMethod method,
                                             const UriComponents& uri,
-                                            const Arguments& headers);
+                                            const Arguments& headers) ORTHANC_OVERRIDE;
 
     // New in Orthanc 1.6.0
     IStorageCommitmentFactory::ILookupHandler* CreateStorageCommitment(