diff --git a/src/add/array.js b/src/add/array.js
index 246eeb99..c0f4f775 100644
--- a/src/add/array.js
+++ b/src/add/array.js
@@ -22,7 +22,7 @@ if (!AP.flat) {
     };
 }
 
-AP.find = function(fn) {
+AP.findWith = function(fn) {
     for (let i=0, l=this.length; i<l; i++) {
         if (fn(this[i])) {
             return i;
diff --git a/src/kiri-mode/cam/client.js b/src/kiri-mode/cam/client.js
index e819ce19..5adf7616 100644
--- a/src/kiri-mode/cam/client.js
+++ b/src/kiri-mode/cam/client.js
@@ -299,7 +299,7 @@ CAM.init = function(kiri, api) {
         let oplist = current.process.ops;
         if (oplist.indexOf(rec) < 0) {
             oplist.push(rec);
-            let fpos = oplist.find(rec => rec.type === 'flip');
+            let fpos = oplist.findWith(rec => rec.type === 'flip');
             if (fpos >= 0 && oplist.length > 1) {
                 let oprec = oplist.splice(fpos,1);
                 oplist.push(oprec[0]);