diff --git a/proto/main.proto b/proto/main.proto
index 03efae4..d87ac07 100644
--- a/proto/main.proto
+++ b/proto/main.proto
@@ -85,7 +85,7 @@ service SnowballR {
 
   rpc GetProjectPaperById (Id) returns (Project.Paper);
   rpc GetAllProjectPapersForProject (Id) returns (Project.Paper.List);
-  rpc AddProjectToPaper (Project.Paper.Add) returns (Project.Paper);
+  rpc AddPaperToProject (Project.Paper.Add) returns (Project.Paper);
   // Update the project paper with the given id using the provided data. Only
   // specified fields will be updated.
   rpc UpdateProjectPaper (Project.Paper.Update) returns (Project.Paper);