diff --git a/lib/libimhex/include/hex/helpers/encoding_file.hpp b/lib/libimhex/include/hex/helpers/encoding_file.hpp
index b04eaaa66..ce16e5fa8 100644
--- a/lib/libimhex/include/hex/helpers/encoding_file.hpp
+++ b/lib/libimhex/include/hex/helpers/encoding_file.hpp
@@ -30,8 +30,8 @@ namespace hex {
 
         bool m_valid = false;
 
-        std::map<u32, std::map<std::vector<u8>, std::string>> m_mapping;
+        std::map<size_t, std::map<std::vector<u8>, std::string>> m_mapping;
         size_t m_longestSequence = 0;
     };
 
-}
\ No newline at end of file
+}