diff --git a/examples/idDHT11_Lib_example/idDHT11_Lib_example.ino b/examples/idDHT11_Lib_example/idDHT11_Lib_example.ino
index 8d7ceca..b043514 100644
--- a/examples/idDHT11_Lib_example/idDHT11_Lib_example.ino
+++ b/examples/idDHT11_Lib_example/idDHT11_Lib_example.ino
@@ -12,7 +12,7 @@ int idDHT11pin = 2; //Digital pin for comunications
 int idDHT11intNumber = 0; //interrupt number (must be the one that use the previus defined pin (see table above)
 
 //declaration
-void dht11_wrapper();
+void dht11_wrapper(); // must be declared before the lib initialization
 
 // Lib instantiate
 idDHT11 DHT11(idDHT11pin,idDHT11intNumber,dht11_wrapper);
@@ -25,6 +25,8 @@ void setup()
   Serial.println(IDDHT11LIB_VERSION);
   Serial.println("---------------");
 }
+// This wrapper is in charge of calling 
+// mus be defined like this for the lib work
 void dht11_wrapper() {
   DHT11.isrCallback();
 }
diff --git a/examples/idDHT11_Lib_example_Simple/idDHT11_Lib_example_Simple.ino b/examples/idDHT11_Lib_example_Simple/idDHT11_Lib_example_Simple.ino
index fe3b65b..b43182a 100644
--- a/examples/idDHT11_Lib_example_Simple/idDHT11_Lib_example_Simple.ino
+++ b/examples/idDHT11_Lib_example_Simple/idDHT11_Lib_example_Simple.ino
@@ -14,7 +14,7 @@ int idDHT11pin = 2; //Digital pin for comunications
 int idDHT11intNumber = 0; //interrupt number (must be the one that use the previus defined pin (see table above)
 
 //declaration
-void dht11_wrapper();
+void dht11_wrapper(); // must be declared before the lib initialization
 
 // Lib instantiate
 idDHT11 DHT11(idDHT11pin,idDHT11intNumber,dht11_wrapper);
@@ -27,6 +27,8 @@ void setup()
   Serial.println(IDDHT11LIB_VERSION);
   Serial.println("---------------");
 }
+// This wrapper is in charge of calling 
+// mus be defined like this for the lib work
 void dht11_wrapper() {
   DHT11.isrCallback();
 }