diff --git a/example/ex5/CMakeLists.txt b/example/ex5/CMakeLists.txt
index d5956051..bd2e4253 100644
--- a/example/ex5/CMakeLists.txt
+++ b/example/ex5/CMakeLists.txt
@@ -9,6 +9,6 @@ xo_add_executable(${SELF_EXE} ${SELF_SRCS})
 # dependencies..
 
 xo_self_headeronly_dependency(${SELF_EXE} xo_unit)
-#xo_dependency(${SELF_EXE} reflect)
+xo_dependency(${SELF_EXE} xo_flatstring)
 
 # end CMakeLists.txt
diff --git a/example/ex5/ex5.cpp b/example/ex5/ex5.cpp
index 85dad01b..b67e8e84 100644
--- a/example/ex5/ex5.cpp
+++ b/example/ex5/ex5.cpp
@@ -1,18 +1,19 @@
 /** @file ex5.cpp **/
 
-#include "xo/unit/mpl/quantity.hpp"
+#include "xo/unit/quantity.hpp"
+#include "xo/unit/quantity_iostream.hpp"
 #include <iostream>
 
 int
 main () {
-    namespace u = xo::unit::units;
-    namespace qty = xo::unit::qty;
+    //namespace u = xo::unit::units;
+    namespace q = xo::qty::qty;
     using namespace std;
 
     /* 20% volatility over 250 days (approx number of trading days in one year) */
-    auto q1 = qty::volatility250d(0.2);
+    auto q1 = q::volatility_250d(0.2);
     /* 10% volatility over 30 days */
-    auto q2 = qty::volatility30d(0.1);
+    auto q2 = q::volatility_30d(0.1);
 
     auto sum = q1 + q2;
     auto prod = q1 * q2;