diff --git a/src/ui/bigtext/bigtext.py b/src/ui/bigtext/bigtext.py
index ce9faa1..ea53b80 100644
--- a/src/ui/bigtext/bigtext.py
+++ b/src/ui/bigtext/bigtext.py
@@ -422,6 +422,14 @@ class InnerBigText(QWidget):
         y_line_offset = self.char_height;
         for l in self.lines:
             text = l.line_tabs_replaced()
+            text = text.replace("\0", "␀") # qt throws error if we try to draw a null character
+            text = text.replace("\1", "␁")
+            text = text.replace("\2", "␂")
+            text = text.replace("\3", "␃")
+            text = text.replace("\4", "␄")
+            text = text.replace("\5", "␅")
+            text = text.replace("\6", "␆")
+            text = text.replace("\a", "␇")
             painter.drawText(left_offset, y_line_offset, text)
             y_line_offset = y_line_offset + self.char_height