diff --git a/src/Standard/Standard_Type.cxx b/src/Standard/Standard_Type.cxx
index 3da6f2c69f..84fccbcb10 100644
--- a/src/Standard/Standard_Type.cxx
+++ b/src/Standard/Standard_Type.cxx
@@ -148,5 +148,5 @@ Standard_Type::~Standard_Type ()
 {
   // remove descriptor from the registry
   registry_type& aRegistry = GetRegistry();
-  Standard_ASSERT(!aRegistry.UnBind(mySystemName), "Standard_Type::~Standard_Type() cannot find itself in registry",);
+  Standard_ASSERT(aRegistry.UnBind(mySystemName), "Standard_Type::~Standard_Type() cannot find itself in registry",);
 }