diff --git a/tools/Evaluator.cpp b/tools/Evaluator.cpp
index d50cd513..07c18d71 100644
--- a/tools/Evaluator.cpp
+++ b/tools/Evaluator.cpp
@@ -1,4 +1,4 @@
-#include <fstream>
+#include <fstream>
 #include <iostream>
 
 #include <kiwi/Utils.h>
@@ -13,7 +13,7 @@ TokenInfo parseWordPOS(const u16string& str)
 {
 	auto p = str.rfind('/');
 	if (p == str.npos) return {};
-	u16string form{ str.begin(), str.begin() + p };
+	u16string form = replace(nonstd::u16string_view(str.data(), p), u"_", u" ");
 	if (str[p + 1] == 'E')
 	{
 		if (form[0] == u'아' || form[0] == u'여') form[0] = u'어';