diff --git a/examples/tests/whiteboard.py b/examples/tests/whiteboard.py
index ecddee8c66f1ad5cf2c8799f63991c6ec8fb7d1b..81c1e66783326b9efdcd2bd61ed5c14afd99325a 100755
--- a/examples/tests/whiteboard.py
+++ b/examples/tests/whiteboard.py
@@ -38,7 +38,7 @@ class WhiteBoard(Test):
         result = ''
         for _ in range(0, iterations):
             result += data
-        self.whiteboard = base64.encodestring(result)
+        self.whiteboard = base64.encodestring(result.encode()).decode('ascii')
 
 
 if __name__ == "__main__":