1 files changed, 2 insertions, 4 deletions
diff --git a/src/utils/dtor.h b/src/utils/dtor.h
index 223b73ed..76c68725 100644
--- a/src/utils/dtor.h
+++ b/src/utils/dtor.h
@@ -23,18 +23,16 @@
 #define UTILS_DTOR_H
 
 #include <algorithm>
-#include <functional>
 #include <utility>
 
 template<typename T>
-struct dtor : public std::unary_function <T, void>
+struct dtor
 {
     void operator()(T &ptr) { delete ptr; }
 };
 
 template<typename T1, typename T2>
-struct dtor<std::pair<T1, T2> > :
-public std::unary_function <std::pair<T1, T2>, void>
+struct dtor<std::pair<T1, T2>>
 {
     void operator()(std::pair<T1, T2> &pair) { delete pair.second; }
 };