diff --git a/examples/ppd42ns.cxx b/examples/ppd42ns.cxx
index fd26a11c..38a64e5a 100644
--- a/examples/ppd42ns.cxx
+++ b/examples/ppd42ns.cxx
@@ -45,7 +45,7 @@ int main ()
 //! [Interesting]
 	// Instantiate a dust sensor on GPIO pin D8
 	upm::PPD42NS* dust = new upm::PPD42NS(8);
-	dustData data;
+	upm::dustData data;
 	cout << "This program will give readings every 30 seconds until you stop it" << endl;
 	while (shouldRun)
 	{
diff --git a/src/ppd42ns/ppd42ns.h b/src/ppd42ns/ppd42ns.h
index 90294008..4cb086a9 100644
--- a/src/ppd42ns/ppd42ns.h
+++ b/src/ppd42ns/ppd42ns.h
@@ -27,6 +27,8 @@
 #include <time.h>
 #include <mraa/aio.h>
 
+namespace upm {
+
 typedef struct
 {
 	int lowPulseOccupancy;
@@ -34,7 +36,6 @@ typedef struct
 	double concentration;
 } dustData;
 
-namespace upm {
 
   /**
    * @brief C++ API for the Dust Sensor