diff --git a/cache.js b/cache.js
index bffda52..59f6a97 100644
--- a/cache.js
+++ b/cache.js
@@ -82,7 +82,7 @@ function cache(options) {
       var val = msg.val
 
       if (typeof val !== 'number') {
-        return this.fail('op_failed_nan', { op: op, key: key, val: oldVal })
+        return this.fail('op_failed_nan', { op: kind, key: key, val: oldVal })
       }
 
       var oldVal = cache.get(key)
diff --git a/package.json b/package.json
index 79a4604..195f53c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@seneca/cache",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "In-memory caching plugin for seneca",
   "main": "cache.js",
   "scripts": {