diff --git a/collects/tests/racket/benchmarks/shootout/typed/nbody-generic.rktl b/collects/tests/racket/benchmarks/shootout/typed/nbody-generic.rktl
index f00fd9504a..0352b6c24d 100644
--- a/collects/tests/racket/benchmarks/shootout/typed/nbody-generic.rktl
+++ b/collects/tests/racket/benchmarks/shootout/typed/nbody-generic.rktl
@@ -131,7 +131,7 @@ Correct output N = 1000 is
                    [dy    (- o1y (body-y i1))]
                    [dz    (- o1z (body-z i1))]
                    [dist2 (+ (* dx dx) (* dy dy) (* dz dz))]
-                   [mag   (assert (/ +dt+ (* dist2 (sqrt dist2))) inexact-real?)]
+                   [mag   (/ +dt+ (* dist2 (assert (sqrt dist2) inexact-real?)))]
                    [dxmag (* dx mag)]
                    [dymag (* dy mag)]
                    [dzmag (* dz mag)]
diff --git a/collects/tests/racket/benchmarks/shootout/typed/nbody-vec-generic.rktl b/collects/tests/racket/benchmarks/shootout/typed/nbody-vec-generic.rktl
index 605e421b0d..240584fe1d 100644
--- a/collects/tests/racket/benchmarks/shootout/typed/nbody-vec-generic.rktl
+++ b/collects/tests/racket/benchmarks/shootout/typed/nbody-vec-generic.rktl
@@ -141,7 +141,7 @@ Correct output N = 1000 is
                    [dy    (- o1y (body-y i1))]
                    [dz    (- o1z (body-z i1))]
                    [dist2 (+ (* dx dx) (* dy dy) (* dz dz))]
-                   [mag   (assert (/ +dt+ (* dist2 (sqrt dist2))) inexact-real?)]
+                   [mag   (/ +dt+ (* dist2 (assert (sqrt dist2) inexact-real?)))]
                    [dxmag (* dx mag)]
                    [dymag (* dy mag)]
                    [dzmag (* dz mag)]