diff --git a/src/test/traced/traced-callback-typedef-test-suite.cc b/src/test/traced/traced-callback-typedef-test-suite.cc
index 5be7a2ce2..25620379e 100644
--- a/src/test/traced/traced-callback-typedef-test-suite.cc
+++ b/src/test/traced/traced-callback-typedef-test-suite.cc
@@ -608,7 +608,7 @@ TracedCallbackTypedefTestCase::DoRun (void)
          empty, empty);
 
   CHECK (SpectrumChannel::LossTracedCallback,
-         Ptr<SpectrumPhy>, Ptr<SpectrumPhy>, double,
+         Ptr<const SpectrumPhy>, Ptr<const SpectrumPhy>, double,
          empty, empty);
 
   CHECK (SpectrumValue::TracedCallback,