diff --git a/parallel_hashmap/phmap_config.h b/parallel_hashmap/phmap_config.h
index 42b0664..fa51502 100644
--- a/parallel_hashmap/phmap_config.h
+++ b/parallel_hashmap/phmap_config.h
@@ -338,6 +338,13 @@
     #define PHMAP_INTERNAL_MSVC_2017_DBG_MODE
 #endif
 
+// ---------------------------------------------------------------------------
+// Checks whether wchar_t is treated as a native type
+// (MSVC: /Zc:wchar_t- treats wchar_t as unsigned short)
+// ---------------------------------------------------------------------------
+#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED)
+#define PHMAP_HAS_NATIVE_WCHAR_T
+#endif
 
 // -----------------------------------------------------------------------------
 // Sanitizer Attributes
diff --git a/parallel_hashmap/phmap_utils.h b/parallel_hashmap/phmap_utils.h
index 72d4e71..1d0c472 100644
--- a/parallel_hashmap/phmap_utils.h
+++ b/parallel_hashmap/phmap_utils.h
@@ -209,12 +209,14 @@ struct Hash<unsigned char> : public phmap_unary_function<unsigned char, size_t>
     { return static_cast<size_t>(val); }
 };
 
+#ifdef PHMAP_HAS_NATIVE_WCHAR_T
 template <>
 struct Hash<wchar_t> : public phmap_unary_function<wchar_t, size_t>
 {
     inline size_t operator()(wchar_t val) const noexcept
     { return static_cast<size_t>(val); }
 };
+#endif
 
 template <>
 struct Hash<int16_t> : public phmap_unary_function<int16_t, size_t>