diff --git a/src/conv.cpp b/src/conv.cpp
index 69a2db7b..de977a5c 100644
--- a/src/conv.cpp
+++ b/src/conv.cpp
@@ -222,7 +222,7 @@ std::string Shorten(const std::basic_string<my_char_t> &s, size_t max_length)
 		return TO_STRING(s);
 	if (max_length < 2)
 		return "";
-	std::basic_string<my_char_t> result(s, 0, max_length/2-1);
+	std::basic_string<my_char_t> result(s, 0, max_length/2-!(max_length%2));
 	result += U("..");
 	result += s.substr(s.length()-max_length/2+1);
 	return TO_STRING(result);