diff --git a/src/highlighters.cc b/src/highlighters.cc
index 2bb08ec0..7c5db277 100644
--- a/src/highlighters.cc
+++ b/src/highlighters.cc
@@ -315,7 +315,7 @@ void expand_unprintable(const Window& window, DisplayBuffer& display_buffer)
                             end = buffer.iterator_at(atom_it->content.end()); it != end; ++it)
                 {
                     Codepoint cp = *it;
-                    if (cp != '\n' and not std::isprint((wchar_t)cp, std::locale()))
+                    if (cp != '\n' and not isprint((int)cp))
                     {
                         std::ostringstream oss;
                         oss << "U+" << std::hex << cp;
diff --git a/src/main.cc b/src/main.cc
index 715489cf..ad41d843 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -171,7 +171,7 @@ int main(int argc, char* argv[])
 {
     try
     {
-        std::locale::global(std::locale(""));
+        setlocale(LC_ALL, "");
 
         signal(SIGSEGV, signal_handler);
         signal(SIGFPE,  signal_handler);