diff --git a/test/hash.cpp b/test/hash.cpp
index 23e0e26..d9bcd48 100644
--- a/test/hash.cpp
+++ b/test/hash.cpp
@@ -1,6 +1,7 @@
 #include <stdplus/hash.hpp>
 
 #include <string>
+#include <tuple>
 
 #include <gtest/gtest.h>
 
@@ -11,7 +12,8 @@
 {
     EXPECT_EQ(0, hashMulti());
     EXPECT_EQ(2654435834, hashMulti(1, 2));
-    hashMulti(1, std::string("bacon"), nullptr);
+    std::tuple<std::string, int> t = {"s", 8};
+    hashMulti(1, std::string("bacon"), nullptr, t);
 }
 
 } // namespace stdplus