diff --git a/components/esm/formid.hpp b/components/esm/formid.hpp
index e9416e35c7..9fe89585c2 100644
--- a/components/esm/formid.hpp
+++ b/components/esm/formid.hpp
@@ -51,10 +51,10 @@ namespace std
     {
         size_t operator()(const ESM::FormId& formId) const
         {
-            static_assert(sizeof(ESM::FormId) == sizeof(size_t));
-            size_t s;
-            memcpy(&s, &formId, sizeof(size_t));
-            return hash<size_t>()(s);
+            static_assert(sizeof(ESM::FormId) == sizeof(uint64_t));
+            uint64_t s;
+            memcpy(&s, &formId, sizeof(ESM::FormId));
+            return hash<uint64_t>()(s);
         }
     };
 
diff --git a/components/misc/strings/algorithm.hpp b/components/misc/strings/algorithm.hpp
index 18f72104bd..681bc0607a 100644
--- a/components/misc/strings/algorithm.hpp
+++ b/components/misc/strings/algorithm.hpp
@@ -4,6 +4,7 @@
 #include "lower.hpp"
 
 #include <algorithm>
+#include <cstdint>
 #include <functional>
 #include <string>
 #include <string_view>
@@ -85,17 +86,17 @@ namespace Misc::StringUtils
     {
         using is_transparent = void;
 
-        constexpr std::size_t operator()(std::string_view str) const
+        std::size_t operator()(std::string_view str) const
         {
             // FNV-1a
-            std::size_t hash{ 0xcbf29ce484222325ull };
-            constexpr std::size_t prime{ 0x00000100000001B3ull };
+            std::uint64_t hash{ 0xcbf29ce484222325ull };
+            constexpr std::uint64_t prime{ 0x00000100000001B3ull };
             for (char c : str)
             {
-                hash ^= static_cast<std::size_t>(toLower(c));
+                hash ^= static_cast<std::uint64_t>(toLower(c));
                 hash *= prime;
             }
-            return hash;
+            return std::hash<std::uint64_t>()(hash);
         }
     };