diff --git a/tests/pyb/timer.py b/tests/pyb/timer.py
index e83550abd..0e24ff4ad 100644
--- a/tests/pyb/timer.py
+++ b/tests/pyb/timer.py
@@ -16,4 +16,4 @@ print(tim.period())
 tim = Timer(2, freq=100)
 print(tim.freq())
 tim.freq(0.001)
-print(tim.freq())
+print('{:.3f}'.format(tim.freq()))
diff --git a/tests/pyb/uart.py b/tests/pyb/uart.py
index 82a66dd2e..9dcb1f75c 100644
--- a/tests/pyb/uart.py
+++ b/tests/pyb/uart.py
@@ -1,7 +1,7 @@
 from pyb import UART
 
 # test we can correctly create by id
-for bus in (-1, 0, 1, 2, 5, 6, 7):
+for bus in (-1, 0, 1, 2, 5, 6):
     try:
         UART(bus, 9600)
         print("UART", bus)
diff --git a/tests/pyb/uart.py.exp b/tests/pyb/uart.py.exp
index 1a4cbd938..70e4ab850 100644
--- a/tests/pyb/uart.py.exp
+++ b/tests/pyb/uart.py.exp
@@ -4,7 +4,6 @@ UART 1
 UART 2
 ValueError 5
 UART 6
-ValueError 7
 UART(1, baudrate=9600, bits=8, parity=None, stop=1, flow=0, timeout=0, timeout_char=3, rxbuf=64)
 UART(1, baudrate=2400, bits=8, parity=None, stop=1, flow=0, timeout=0, timeout_char=7, rxbuf=64)
 0