diff --git a/src/views/Options/Rules.js b/src/views/Options/Rules.js
index 87af4f5..12a905b 100644
--- a/src/views/Options/Rules.js
+++ b/src/views/Options/Rules.js
@@ -459,6 +459,7 @@ function RuleFields({ rule, rules, setShow, setKeyword }) {
                 type="number"
                 name="splitLength"
                 value={splitLength}
+                disabled={disabled}
                 onChange={handleChange}
                 min={0}
                 max={1000}