diff --git a/graphs.hpp b/graphs.hpp
index dc642eb..54f0271 100644
--- a/graphs.hpp
+++ b/graphs.hpp
@@ -19,8 +19,13 @@
 #include <sys/ioctl.h>
 #include <unistd.h>
 
+#ifdef TGLIB_GRAPHS_NAMESPACE
+namespace TGLIB_GRAPHS_NAMESPACE
+{
+#else
 namespace graphs
 {
+#endif
 	using namespace std;
 
 	enum style_type
diff --git a/tables.hpp b/tables.hpp
index fb4255d..5f9fe56 100644
--- a/tables.hpp
+++ b/tables.hpp
@@ -14,8 +14,13 @@
 #include <unistd.h>
 #include <regex>
 
+#ifdef TGLIB_TABLES_NAMESPACE
+namespace TGLIB_TABLES_NAMESPACE
+{
+#else
 namespace tables
 {
+#endif
 	using namespace std;
 
 	enum style_type