diff --git a/scripts/pybootchartgui/pybootchartgui/main.py.in b/scripts/pybootchartgui/pybootchartgui/main.py.in
index af26bd2296..a954b125da 100644
--- a/scripts/pybootchartgui/pybootchartgui/main.py.in
+++ b/scripts/pybootchartgui/pybootchartgui/main.py.in
@@ -147,9 +147,7 @@ def main(argv=None):
 					for time in res[4]:
 						if time is not None:
 							# output as ms
-							print(time * 10, file=f)
-						else:
-							print(file=f)
+							f.write(time * 10)
 				finally:
 					f.close()
 			filename = _get_filename(options.output)