diff --git a/test/limits_test.cpp b/test/limits_test.cpp
index 8c43ac0e..98213181 100644
--- a/test/limits_test.cpp
+++ b/test/limits_test.cpp
@@ -52,6 +52,7 @@ template<typename T> inline T make_char_numeric_for_streaming(T x) { return x; }
 inline int make_char_numeric_for_streaming(char c) { return c; }
 inline int make_char_numeric_for_streaming(signed char c) { return c; }
 inline int make_char_numeric_for_streaming(unsigned char c) { return c; }
+inline int make_char_numeric_for_streaming(wchar_t c) { return c; }
 #endif
 
 #if (defined(_GLIBCPP_VERSION) || defined(_GLIBCXX_VERSION)) \