diff --git a/tests/periph_uart_nonblocking/tests/01-run.py b/tests/periph_uart_nonblocking/tests/01-run.py
index 028db2dcdf..be7357eae2 100755
--- a/tests/periph_uart_nonblocking/tests/01-run.py
+++ b/tests/periph_uart_nonblocking/tests/01-run.py
@@ -10,7 +10,7 @@ import sys
 from testrunner import run
 
 
-PRECISION = 1.002
+PRECISION = 1.005
 
 
 def testfunc(child):