diff --git a/tests/test_math.sh b/tests/test_math.sh
index 83307d3..56020e4 100644
--- a/tests/test_math.sh
+++ b/tests/test_math.sh
@@ -2,6 +2,15 @@
 
 test_add64() {
   result=$("${QEMU}" -B 0x80000000 -s 2k tests/math_add64.elf)
+  # 3.5
+  # 3.75
+  expected=$(cat << END
+00000003.80000000
+00000003.C0000000
+END
+)
 
-  test $? -eq 0 && test "${result}" = "00000003.80000000\n00000003.C0000000" # 3.5, 3.75
+  # TODO: Ideally this test would allow calling the binary repeatedly with
+  # different inputs.
+  test $? -eq 0 && test "$result" = "$expected"
 }