3 files changed, 8 insertions, 0 deletions
diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp
index f78eb2d..099c261 100755
--- a/cores/arduino/HardwareSerial.cpp
+++ b/cores/arduino/HardwareSerial.cpp
@@ -138,6 +138,12 @@ void HardwareSerial::println(int n)
   println();
 }
 
+void HardwareSerial::println(unsigned int n)
+{
+  print(n);
+  println();
+}
+
 void HardwareSerial::println(long n)
 {
   print(n);
diff --git a/cores/arduino/HardwareSerial.h b/cores/arduino/HardwareSerial.h
index 4f0cb54..5de9a1f 100755
--- a/cores/arduino/HardwareSerial.h
+++ b/cores/arduino/HardwareSerial.h
@@ -52,6 +52,7 @@ class HardwareSerial
     void println(const char[]);
     void println(uint8_t);
     void println(int);
+    void println(unsigned int);
     void println(long);
     void println(unsigned long);
     void println(long, int);
diff --git a/libraries/Matrix/examples/hello_matrix/hello_matrix.pde b/libraries/Matrix/examples/hello_matrix/hello_matrix.pde
index eafed3e..127917f 100644
--- a/libraries/Matrix/examples/hello_matrix/hello_matrix.pde
+++ b/libraries/Matrix/examples/hello_matrix/hello_matrix.pde
@@ -1,3 +1,4 @@
+#include <Sprite.h>
 #include <Matrix.h>
 
 // Hello Matrix