diff --git a/tests/test-validator.cpp b/tests/test-validator.cpp
index 1b24a3d..19e2b78 100644
--- a/tests/test-validator.cpp
+++ b/tests/test-validator.cpp
@@ -38,8 +38,9 @@
   keyChain.signByIdentity(*data, identity);
   
   ValidatorNull validator;
-  
-  validator.validate(data,
+
+  // data must be a shared pointer
+  validator.validate(*data,
 		     bind(&onValidated, _1),
 		     bind(&onValidationFailed, _1));