diff --git a/crates/functions/src/math.rs b/crates/functions/src/math.rs
index eeeb5303d..4b84e572d 100644
--- a/crates/functions/src/math.rs
+++ b/crates/functions/src/math.rs
@@ -1462,7 +1462,7 @@ mod tests {
             is_err(ev2("MOD", x, d), Num);
         }
         close(ev2("MOD", 1e12 * 7.0 + 3.0, 7.0), 3.0);
-        close(ev2("MOD", 1_125_899_999_999.9998, 1.0), 0.989_990_234_375);
+        close(ev2("MOD", 1_125_899_999_999.999_8, 1.0), 0.989_990_234_375);
     }
 
     #[test]