Appium .getPageSources xml encoding

If I try to get driver.getPageSource() in Android Appium, it gives me XML with bad encoding like:

<?xml version="1.0" encoding="UTF-8"?>
...
<android.widget.TextView 
index="1" 
text="Florbal - mu?i" 
class="android.widget.TextView"
...
bounds="[68,655][712,696]"
resource-id="my.app.test:id/sport_name"
instance="9" />

But text should be "Florbal - muži"

I can see right encoding in UI Automator Viewer. And its not caused by Ëclipse console encoding.