1 files changed, 2 insertions, 1 deletions

diff --git a/src/CaseFold.zig b/src/CaseFold.zig
index 3e7535e..19c9da8 100644
--- a/src/CaseFold.zig
+++ b/src/CaseFold.zig
@@ -19,9 +19,10 @@ pub fn caseFold(
 ) ![]const u21 {
     var cfcps = std.ArrayList(u21).init(allocator);
     defer cfcps.deinit();
+    var buf: [3]u21 = undefined;
 
     for (cps) |cp| {
-        const cf = self.fold_data.caseFold(cp);
+        const cf = self.fold_data.caseFold(cp, &buf);
 
         if (cf.len == 0) {
             try cfcps.append(cp);