diff --git a/tests/qcd/gauge.py b/tests/qcd/gauge.py
index cbc0ae3e..ab9ac48d 100755
--- a/tests/qcd/gauge.py
+++ b/tests/qcd/gauge.py
@@ -356,7 +356,7 @@
 act2 = ald(U + mom2)
 eps = abs(act / act2 - 1)
 g.message("Draw from log det action:", eps)
-assert eps < 1e-10
+assert eps < 1e-8
 
 if True:
     U0 = dft.inverse(Uft)