diff --git a/include/nlohmann/ordered_map.hpp b/include/nlohmann/ordered_map.hpp
index 43b6ab475..fa20289b2 100644
--- a/include/nlohmann/ordered_map.hpp
+++ b/include/nlohmann/ordered_map.hpp
@@ -143,7 +143,7 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         //             first    last
 
         // remove the unneeded elements at the end of the vector
-        Container::resize(this->size() - elements_affected);
+        Container::resize(static_cast<size_type>(this->size() - elements_affected));
 
         // [ a, b, c, d, h, i, j ]
         //               ^        ^
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index 6a155f9f4..244dfa15a 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -17530,7 +17530,7 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         //             first    last
 
         // remove the unneeded elements at the end of the vector
-        Container::resize(this->size() - elements_affected);
+        Container::resize(static_cast<size_type>(this->size() - elements_affected));
 
         // [ a, b, c, d, h, i, j ]
         //               ^        ^