Index: uspace/lib/cpp/include/impl/ios.hpp
===================================================================
--- uspace/lib/cpp/include/impl/ios.hpp	(revision 0b4b81c863b44dffd1639ac4f06af79bb4b2bd12)
+++ uspace/lib/cpp/include/impl/ios.hpp	(revision 6648ab33d956d82634fb7b457a8e08f19ed97c77)
@@ -247,5 +247,5 @@
      */
 
-    template<class Char, class Traits = char_traits<Char>>
+    template<class Char, class Traits>
     class basic_ios: public ios_base
     {
Index: uspace/lib/cpp/include/impl/istream.hpp
===================================================================
--- uspace/lib/cpp/include/impl/istream.hpp	(revision 0b4b81c863b44dffd1639ac4f06af79bb4b2bd12)
+++ uspace/lib/cpp/include/impl/istream.hpp	(revision 6648ab33d956d82634fb7b457a8e08f19ed97c77)
@@ -40,5 +40,5 @@
      */
 
-    template<class Char, class Traits = char_traits<Char>>
+    template<class Char, class Traits>
     class basic_istream: virtual public basic_ios<Char, Traits>
     {
@@ -380,5 +380,5 @@
     using wistream = basic_istream<wchar_t>;
 
-    template<class Char, class Traits = char_traits<Char>>
+    template<class Char, class Traits>
     class basic_iostream;
 
Index: uspace/lib/cpp/include/impl/ostream.hpp
===================================================================
--- uspace/lib/cpp/include/impl/ostream.hpp	(revision 0b4b81c863b44dffd1639ac4f06af79bb4b2bd12)
+++ uspace/lib/cpp/include/impl/ostream.hpp	(revision 6648ab33d956d82634fb7b457a8e08f19ed97c77)
@@ -34,5 +34,5 @@
 namespace std
 {
-    template<class Char, class Traits = char_traits<Char>>
+    template<class Char, class Traits>
     class basic_ostream;
 
Index: uspace/lib/cpp/include/impl/streambuf.hpp
===================================================================
--- uspace/lib/cpp/include/impl/streambuf.hpp	(revision 0b4b81c863b44dffd1639ac4f06af79bb4b2bd12)
+++ uspace/lib/cpp/include/impl/streambuf.hpp	(revision 6648ab33d956d82634fb7b457a8e08f19ed97c77)
@@ -41,5 +41,5 @@
      */
 
-    template<class Char, class Traits = character_traits<Char>>
+    template<class Char, class Traits>
     class basic_streambuf
     {