diff --git a/src/test-gradient-method.cc b/src/test-gradient-method.cc
index 6cc0694c40ee27097d5900544901c00fda83ca97..1b93f391c4deed911c3dee9a95c8aec7c350e75e 100644
--- a/src/test-gradient-method.cc
+++ b/src/test-gradient-method.cc
@@ -319,7 +319,7 @@ void testSampleFunction2() {
   start[0] = 279;
   start[1] = -96;
 
-  double const ret2 = functionTester(J, start, 9);
+  double const ret2 = functionTester(J, start, 7);
   assert(std::abs(ret1 - ret2) < 1e-5);
 
   start[0] = 0;