diff --git a/test/mp_less.cpp b/test/mp_less.cpp
index 932c285..0e72faf 100644
--- a/test/mp_less.cpp
+++ b/test/mp_less.cpp
@@ -6,6 +6,11 @@
 // See accompanying file LICENSE_1_0.txt or copy at
 // http://www.boost.org/LICENSE_1_0.txt
 
+#include <boost/mp11/detail/config.hpp>
+
+#if BOOST_MP11_WORKAROUND( BOOST_MP11_GCC, < 40800 )
+# pragma GCC diagnostic ignored "-Wsign-compare"
+#endif
 
 #include <boost/mp11/function.hpp>
 #include <boost/mp11/integral.hpp>
diff --git a/test/mp_max.cpp b/test/mp_max.cpp
index 6ea6e73..577d26b 100644
--- a/test/mp_max.cpp
+++ b/test/mp_max.cpp
@@ -6,6 +6,11 @@
 // See accompanying file LICENSE_1_0.txt or copy at
 // http://www.boost.org/LICENSE_1_0.txt
 
+#include <boost/mp11/detail/config.hpp>
+
+#if BOOST_MP11_WORKAROUND( BOOST_MP11_GCC, < 40800 )
+# pragma GCC diagnostic ignored "-Wsign-compare"
+#endif
 
 #include <boost/mp11/function.hpp>
 #include <boost/mp11/integral.hpp>
diff --git a/test/mp_min.cpp b/test/mp_min.cpp
index 1c2cd6f..a232098 100644
--- a/test/mp_min.cpp
+++ b/test/mp_min.cpp
@@ -6,6 +6,11 @@
 // See accompanying file LICENSE_1_0.txt or copy at
 // http://www.boost.org/LICENSE_1_0.txt
 
+#include <boost/mp11/detail/config.hpp>
+
+#if BOOST_MP11_WORKAROUND( BOOST_MP11_GCC, < 40800 )
+# pragma GCC diagnostic ignored "-Wsign-compare"
+#endif
 
 #include <boost/mp11/function.hpp>
 #include <boost/mp11/integral.hpp>