diff --git a/libos/include/os/Action.h b/libos/include/os/Action.h
index 4b09d8f2..17c314f5 100644
--- a/libos/include/os/Action.h
+++ b/libos/include/os/Action.h
@@ -107,7 +107,7 @@ namespace os
 
             void call()
             {
-                return m_function();
+                m_function();
             }
 
           private: