diff --git a/tests/math.in b/tests/math.in
index d8cb50922..40ad59f5b 100644
--- a/tests/math.in
+++ b/tests/math.in
@@ -7,3 +7,4 @@ math -s0 '10 % 6'
 math '23 % 7'
 math -s6 '5 / 3 * 0.3'
 true
+math "1 + 1233242342353453463458972349873489273984873289472914712894791824712941"
diff --git a/tests/math.out b/tests/math.out
index 0a46b6a56..a49461da2 100644
--- a/tests/math.out
+++ b/tests/math.out
@@ -6,3 +6,4 @@
 4
 2
 .499999
+1233242342353453463458972349873489273984873289472914712894791824712942