diff --git a/test/testsuite.cpp b/test/testsuite.cpp
index 49bc517f5..4cbf1185b 100644
--- a/test/testsuite.cpp
+++ b/test/testsuite.cpp
@@ -173,7 +173,7 @@ void TestFixture::reportErr(const std::string &errmsg)
     errout << errmsg << std::endl;
 }
 
-void TestFixture::reportOut(const std::string &outmsg)
+void TestFixture::reportOut(const std::string & /*outmsg*/)
 {
     // These can probably be ignored
 }