diff --git a/python/src/com/jetbrains/python/remote/PythonRemoteInterpreterManager.java b/python/src/com/jetbrains/python/remote/PythonRemoteInterpreterManager.java
index b080792e2a96..08fa31a82cd1 100644
--- a/python/src/com/jetbrains/python/remote/PythonRemoteInterpreterManager.java
+++ b/python/src/com/jetbrains/python/remote/PythonRemoteInterpreterManager.java
@@ -133,6 +133,7 @@ public abstract class PythonRemoteInterpreterManager {
     newMappingSettings.addMapping(PythonHelpersLocator.getHelpersRoot().getPath(), data.getHelpersPath());
   }
 
+  @NotNull
   public abstract PathMappingSettings setupMappings(@Nullable Project project,
                                                     @NotNull PyRemoteSdkAdditionalDataBase data,
                                                     @Nullable PathMappingSettings mappingSettings);