diff --git a/include/return_types.hpp b/include/return_types.hpp
index 28cdca5..f7e7f03 100644
--- a/include/return_types.hpp
+++ b/include/return_types.hpp
@@ -39,7 +39,7 @@ using std::string_view;
  *  | --------: |:-------------------------------------------------------------|
  *  |         0 | No error.                                                    |
  */
-struct answer
+struct answer_type
 {
     /*!
      *  @brief  @ref error "Error code".
@@ -85,7 +85,8 @@ struct answer
      *
      *  @since  0.1.0
      */
-    friend std::ostream &operator <<(std::ostream &out, const answer &answer);
+    friend std::ostream &operator <<(std::ostream &out,
+                                     const answer_type &answer);
 };
 
 } // namespace mastodonpp
diff --git a/src/return_types.cpp b/src/return_types.cpp
index 6367f7c..3a7b30f 100644
--- a/src/return_types.cpp
+++ b/src/return_types.cpp
@@ -19,17 +19,17 @@
 namespace mastodonpp
 {
 
-answer::operator bool() const
+answer_type::operator bool() const
 {
     return (error_code == 0);
 }
 
-answer::operator string_view() const
+answer_type::operator string_view() const
 {
     return body;
 }
 
-std::ostream &operator <<(std::ostream &out, const answer &answer)
+std::ostream &operator <<(std::ostream &out, const answer_type &answer)
 {
     out << answer.body;
     return out;