diff --git a/include/xlnt/styles/border.hpp b/include/xlnt/styles/border.hpp
index def7a78b..ffdfccdd 100644
--- a/include/xlnt/styles/border.hpp
+++ b/include/xlnt/styles/border.hpp
@@ -26,6 +26,7 @@
 #include <cstddef>
 #include <functional>
 #include <unordered_map>
+#include <vector>
 
 #include <xlnt/xlnt_config.hpp>
 #include <xlnt/styles/border_style.hpp>
@@ -91,7 +92,7 @@ public:
 		border_style style_;
 	};
 
-	static const std::unordered_map<side, std::string> &get_side_names();
+	static const std::vector<std::pair<side, std::string>> &get_side_names();
 
 	border();
 
diff --git a/source/styles/border.cpp b/source/styles/border.cpp
index 85495eb8..e2e39c83 100644
--- a/source/styles/border.cpp
+++ b/source/styles/border.cpp
@@ -81,10 +81,10 @@ border::border()
 	};
 }
 
-const std::unordered_map<xlnt::border::side, std::string> &border::get_side_names()
+const std::vector<std::pair<xlnt::border::side, std::string>> &border::get_side_names()
 {
 	static auto *sides =
-		new std::unordered_map<xlnt::border::side, std::string>
+	    new std::vector<std::pair<xlnt::border::side, std::string>>
 		{
 			{ xlnt::border::side::start, "left" },
 			{ xlnt::border::side::end, "right" },
diff --git a/source/utils/path.cpp b/source/utils/path.cpp
index 22ca6202..8f7b3795 100644
--- a/source/utils/path.cpp
+++ b/source/utils/path.cpp
@@ -78,6 +78,12 @@ bool is_root(const std::string &part)
 	return part == "/";
 }
 
+
+bool is_absolute(const std::string &part)
+{
+    return !part.empty() && part[0] == '/';
+}
+
 #endif
 
 std::vector<std::string> split_path(const std::string &path, char delim)