diff --git a/include/nlohmann/detail/output/binary_writer.hpp b/include/nlohmann/detail/output/binary_writer.hpp
index d506e7e2..01cd104d 100644
--- a/include/nlohmann/detail/output/binary_writer.hpp
+++ b/include/nlohmann/detail/output/binary_writer.hpp
@@ -1326,7 +1326,7 @@ class binary_writer
 
   private:
     /// whether we can assume little endianess
-    const bool is_little_endian = binary_reader<BasicJsonType, detail::input_buffer_adapter>::little_endianess();
+    const bool is_little_endian = binary_reader<BasicJsonType, input_buffer_adapter>::little_endianess();
 
     /// the output
     output_adapter_t<CharType> oa = nullptr;
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index 286e0a29..be12b965 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -12674,7 +12674,7 @@ class binary_writer
 
   private:
     /// whether we can assume little endianess
-    const bool is_little_endian = binary_reader<BasicJsonType, detail::input_buffer_adapter>::little_endianess();
+    const bool is_little_endian = binary_reader<BasicJsonType, input_buffer_adapter>::little_endianess();
 
     /// the output
     output_adapter_t<CharType> oa = nullptr;