diff --git a/src/util/cast.js b/src/util/cast.js
index 152ff433..19d16999 100644
--- a/src/util/cast.js
+++ b/src/util/cast.js
@@ -118,7 +118,13 @@ class Cast {
             // Scratch compares strings as case insensitive.
             const s1 = String(v1).toLowerCase();
             const s2 = String(v2).toLowerCase();
-            return s1.localeCompare(s2);
+            if(s1 < s2) {
+                return -1
+            } else if (s1 > s2) {
+                return 1
+            } else {
+                return 0
+            }
         }
         // Compare as numbers.
         return n1 - n2;