diff --git a/tests/testRiemannExact.c b/tests/testRiemannExact.c
index 0c8fba8424f212a827f987ea989a109f1ec752c5..1943820339ba2ac06d194a17d2d450157ded1a31 100644
--- a/tests/testRiemannExact.c
+++ b/tests/testRiemannExact.c
@@ -331,7 +331,8 @@ int main() {
   check_riemann_exact();
 
   /* symmetry test */
-  check_riemann_symmetry();
+  int i;
+  for (i = 0; i < 100; ++i) check_riemann_symmetry();
 
   return 0;
 }