diff --git a/test/test_clmath.py b/test/test_clmath.py
index a1dfc36b05020929abdd79cd5dbcd2d39d6a5f43..19b9144b9a153056888da81c7fa6a590142b3829 100644
--- a/test/test_clmath.py
+++ b/test/test_clmath.py
@@ -119,7 +119,7 @@ if have_cl():
     test_asin = make_unary_function_test("asin", (-0.9, 0.9), 5e-7)
     test_acos = make_unary_function_test("acos", (-0.9, 0.9), 5e-7)
     test_tan = make_unary_function_test("tan", 
-            (-math.pi/2 + 0.1, math.pi/2 - 0.1), 1e-5, use_complex=True)
+            (-math.pi/2 + 0.1, math.pi/2 - 0.1), 2e-5, use_complex=True)
     test_atan = make_unary_function_test("atan", (-10, 10), 2e-7)
 
     test_sinh = make_unary_function_test("sinh", (-3, 3), 1e-6, use_complex=2e-3)