diff --git a/Trigger/TrigValidation/TrigUpgradeTest/src/TestMHypoTool.cxx b/Trigger/TrigValidation/TrigUpgradeTest/src/TestMHypoTool.cxx
index 79395c1130239c6175ea77c2cca921d405d2bc7e..c8f195e2f649a9760aebe3747ba03ad4b1cb64a5 100644
--- a/Trigger/TrigValidation/TrigUpgradeTest/src/TestMHypoTool.cxx
+++ b/Trigger/TrigValidation/TrigUpgradeTest/src/TestMHypoTool.cxx
@@ -13,8 +13,8 @@ namespace HLTTest {
     ITestHypoTool( name ),
     AthAlgTool( type, name, parent )
   {
-    declareProperty( "Threshold", m_threshold );
-    declareProperty( "Multiplicity", m_multiplicity );
+    declareProperty( "Threshold", m_threshold = 0);
+    declareProperty( "Multiplicity", m_multiplicity = 0 );
     declareProperty( "Property", m_property );
   }