diff --git a/test/object_with_zone.cpp b/test/object_with_zone.cpp
index c28a60ff..591424a7 100644
--- a/test/object_with_zone.cpp
+++ b/test/object_with_zone.cpp
@@ -749,7 +749,14 @@ TEST(object_with_zone, user_defined_non_virtual)
 
     msgpack::zone z;
     msgpack::object obj(b, z);
+#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) && !defined(__clang__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#endif // (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) && !defined(__clang__)
     bottom br = obj.as<bottom>();
+#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) && !defined(__clang__)
+#pragma GCC diagnostic pop
+#endif // (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) && !defined(__clang__)
     EXPECT_EQ(b.b, br.b);
     EXPECT_EQ(b.m1, br.m1);
     EXPECT_EQ(b.m2, br.m2);
@@ -787,7 +794,14 @@ TEST(object_with_zone, user_defined_virtual)
 
     msgpack::zone z;
     msgpack::object obj(b, z);
+#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) && !defined(__clang__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#endif // (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) && !defined(__clang__)
     v_bottom br = obj.as<v_bottom>();
+#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) && !defined(__clang__)
+#pragma GCC diagnostic pop
+#endif // (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) && !defined(__clang__)
     EXPECT_EQ(b.b, br.b);
     EXPECT_EQ(b.m1, br.m1);
     EXPECT_EQ(b.m2, br.m2);
diff --git a/test/user_class.cpp b/test/user_class.cpp
index 0648b184..e06e305f 100644
--- a/test/user_class.cpp
+++ b/test/user_class.cpp
@@ -389,7 +389,14 @@ TEST(MSGPACK_INHERIT, define_map_non_virtual)
     msgpack::pack(sbuf, b);
     msgpack::object_handle oh =
         msgpack::unpack(sbuf.data(), sbuf.size());
+#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) && !defined(__clang__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#endif // (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) && !defined(__clang__)
     dm_bottom br = oh.get().as<dm_bottom>();
+#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) && !defined(__clang__)
+#pragma GCC diagnostic pop
+#endif // (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) && !defined(__clang__)
     EXPECT_EQ(b.b, br.b);
     EXPECT_EQ(b.m1, br.m1);
     EXPECT_EQ(b.m2, br.m2);