Lower case namespaces.
diff --git a/common/trace_parser.hpp b/common/trace_parser.hpp
index 3aaa6d3..8b071f5 100644
--- a/common/trace_parser.hpp
+++ b/common/trace_parser.hpp
@@ -35,7 +35,7 @@
 #include "trace_model.hpp"
 
 
-namespace Trace {
+namespace trace {
 
 
 struct ParseBookmark
@@ -192,6 +192,6 @@
 };
 
 
-} /* namespace Trace */
+} /* namespace trace */
 
 #endif /* _TRACE_PARSER_HPP_ */