diff --git a/tests/security/test-validator.cpp b/tests/security/test-validator.cpp
index c3e5809..2d51f32 100644
--- a/tests/security/test-validator.cpp
+++ b/tests/security/test-validator.cpp
@@ -45,8 +45,8 @@
 
   // data must be a shared pointer
   validator.validate(*data,
-		     bind(&onValidated, _1),
-		     bind(&onValidationFailed, _1, _2));
+                     bind(&onValidated, _1),
+                     bind(&onValidationFailed, _1, _2));
 
   keyChain.deleteIdentity(identity);
 }