diff --git a/u02/src/tests.cpp b/u02/src/tests.cpp
index 22c028b..d3a2197 100644
--- a/u02/src/tests.cpp
+++ b/u02/src/tests.cpp
@@ -438,7 +438,7 @@ TEST_CASE("Barycentric coordinates (prop: Σ = 1)") {
 
   // If all points are on a straight line, the property does not hold
   if (!(x0 == x1 && x1 == x2) && !(y0 == y1 && y1 == y2)) {
-    REQUIRE_THAT(b1 + b2 + b3, WithinRel(1.0, 1e-4));
+    REQUIRE_THAT(b1 + b2 + b3, WithinRel(1.0, 0.01));
   }
 }