diff --git a/backtrace_null.cpp b/backtrace_null.cpp
index 0d0d5575..ef02affe 100644
--- a/backtrace_null.cpp
+++ b/backtrace_null.cpp
@@ -11,16 +11,18 @@
 
 #include <ostream>
 
+static constexpr std::size_t DEFAULT_DEPTH = 16;
+
 
 ///////////////////////////////////////////////////////////////////////////////
-debug::backtrace::backtrace (void):
+cruft::backtrace::backtrace (void):
     m_frames (DEFAULT_DEPTH)
 { ; }
 
 
 ///////////////////////////////////////////////////////////////////////////////
 std::ostream&
-debug::operator <<(std::ostream &os, const debug::backtrace&)
+cruft::operator <<(std::ostream &os, const cruft::backtrace&)
 {
     return os << "null_backtrace";
 }