diff --git a/include/errors/error.hpp b/include/errors/error.hpp
index ce0b78a..932e8ac 100644
--- a/include/errors/error.hpp
+++ b/include/errors/error.hpp
@@ -2,9 +2,7 @@
 
 #include <memory>
 #include <ostream>
-#include <string>
 #include <string_view>
-#include <utility>
 
 // Prevent conflicting name with the nil macro in Objective-C.
 // See: https://github.com/threeal/errors-cpp/issues/128
diff --git a/src/error.cpp b/src/error.cpp
index 23ad13f..7504010 100644
--- a/src/error.cpp
+++ b/src/error.cpp
@@ -1,4 +1,3 @@
-#include <algorithm>
 #include <errors/error.hpp>
 
 namespace errors {