diff --git a/src/core/model/callback.cc b/src/core/model/callback.cc
index dc96bdf74..a4876a3e7 100644
--- a/src/core/model/callback.cc
+++ b/src/core/model/callback.cc
@@ -126,7 +126,7 @@ CallbackImplBase::Demangle (const std::string& mangled)
 #else
 
 std::string
-ns3::CallbackBase::Demangle (const std::string& mangled)
+ns3::CallbackImplBase::Demangle (const std::string& mangled)
 {
   NS_LOG_FUNCTION (this << mangled);
   return mangled;