diff --git a/test/threads/ThreadsTest.thrift b/test/threads/ThreadsTest.thrift
index ebf2513..ed071e5 100755
--- a/test/threads/ThreadsTest.thrift
+++ b/test/threads/ThreadsTest.thrift
@@ -1,11 +1,11 @@
 #!/usr/local/bin/thrift -cpp -py
 
 service ThreadsTest {
-  void threadOne(1: i32 sleep=15),
-  void threadTwo(2: i32 sleep=15),
-  void threadThree(3: i32 sleep=15),
-  void threadFour(4: i32 sleep=15)
+  i32 threadOne(1: i32 sleep=15),
+  i32 threadTwo(2: i32 sleep=15),
+  i32 threadThree(3: i32 sleep=15),
+  i32 threadFour(4: i32 sleep=15)
 
-  void stop();
+  i32 stop();
 
 }