diff --git a/test/test_tree_1d_shallowwater.jl b/test/test_tree_1d_shallowwater.jl
index 009349aae68..7ec3089d33a 100644
--- a/test/test_tree_1d_shallowwater.jl
+++ b/test/test_tree_1d_shallowwater.jl
@@ -111,7 +111,7 @@ end
                         ],
                         tspan=(0.0, 0.25),
                         # Soften the tolerance as test results vary between different CPUs
-                        atol = 1000*eps())
+                        atol=1000 * eps())
     # Ensure that we do not have excessive memory allocations
     # (e.g., from type instabilities)
     let