diff --git a/packages/@jsonql/koa/package.json b/packages/@jsonql/koa/package.json
index 6b7eeb929498c5eabf16f98bf28e323efa698155..52f22d1d3dbfd46299aa20fc0cae8ee05d4944b9 100644
--- a/packages/@jsonql/koa/package.json
+++ b/packages/@jsonql/koa/package.json
@@ -53,7 +53,7 @@
     "debug": "^4.1.1",
     "fs-extra": "^8.1.0",
     "jsonql-constants": "^1.8.10",
-    "jsonql-koa": "^1.4.5",
+    "jsonql-koa": "^1.4.6",
     "jsonql-params-validator": "^1.4.11",
     "koa": "^2.11.0",
     "koa-bodyparser": "^4.2.1",
diff --git a/packages/@jsonql/koa/tests/fixtures/keys/privateKey.pem b/packages/@jsonql/koa/tests/fixtures/keys/privateKey.pem
deleted file mode 100644
index 49e03d8f211d0f227ab05bba2ec7e56350b7a663..0000000000000000000000000000000000000000
--- a/packages/@jsonql/koa/tests/fixtures/keys/privateKey.pem
+++ /dev/null
@@ -1,15 +0,0 @@
------BEGIN RSA PRIVATE KEY-----
-MIICXQIBAAKBgQDGAgRsj3oaUjHGoAU/9mbRwMxfH6aLD3xr+WRtZ0twYEy5gzcx
-rAvgFooLCJSditTp+KeAnibb443X90dGd/Y+Frb4eMwvQBfsDT682EdkHdiM+wtQ
-Y4/f7v5lUKWelhCJ6HhdKrsRtrK7dsxmC1+jGYMxEqiiwwvtoSjmdzgHVwIDAQAB
-AoGBAKAsy5ViLz0RlpB9rCGE2sH8+5ZLjTbazSSvNu1FbQI39HjxS3nUGjspIHwy
-cb5Lq1alviJOTVL9biXxM+gubLN5BzA6xtt7+r7xh4x2LnM0kR47I7WiL0dboHGY
-KhgZWAg/ryUVEtSx3RsOg30hABw43t8hS23IO99L2YXQ/KOxAkEA+bnHAlxWZyfp
-D9exZ7RhgNZ0slTy/0+tbP6z2KFso17RIeyUVsUx4Uc1vozGaQmeEZAKXxVMNn3b
-qPxskpLnLwJBAMr7l/gTbBG/XdLQlCFpNcZMQcMqr/mBWFtIQnws7gYRG4MJhfeQ
-U0mWg4PJG0/4OnZJtm91HTaW0AiAOBzK2FkCQG/EqkFwOmuo/TLOAuS7YvhbA5fd
-VXTXoHMr/Cp09T6ZbViVnj7Hu29sg61pLFROraSGp12vFpE8+1dCwwVHIpkCQD6h
-BFHBxF1xe0R5oMrySGpHyx6pxCQq2ZVIpWLlBggPLTrwLEqnWFtjOm7mFSxGfdtT
-gRvAuePHAqcs0KNpnvkCQQCkOFLl6pHK4JUr2jWSH2Mk4CFUmY2LUQUZuII9XCGy
-z3lh17zp4cmg2JYvA6YtBzE7oDdlU7HAnxSUf6AC0UbK
------END RSA PRIVATE KEY-----
diff --git a/packages/@jsonql/koa/tests/fixtures/keys/publicKey.pem b/packages/@jsonql/koa/tests/fixtures/keys/publicKey.pem
deleted file mode 100644
index ae7b97b2c789470e011a49f86c73ca7d564e88e7..0000000000000000000000000000000000000000
--- a/packages/@jsonql/koa/tests/fixtures/keys/publicKey.pem
+++ /dev/null
@@ -1,6 +0,0 @@
------BEGIN PUBLIC KEY-----
-MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDGAgRsj3oaUjHGoAU/9mbRwMxf
-H6aLD3xr+WRtZ0twYEy5gzcxrAvgFooLCJSditTp+KeAnibb443X90dGd/Y+Frb4
-eMwvQBfsDT682EdkHdiM+wtQY4/f7v5lUKWelhCJ6HhdKrsRtrK7dsxmC1+jGYMx
-EqiiwwvtoSjmdzgHVwIDAQAB
------END PUBLIC KEY-----
diff --git a/packages/koa/package.json b/packages/koa/package.json
index 01b45c5707d432047a9c918cc41cd89234043674..5ff8c1d50a33f312d2ed458ddae9dc6256de14a4 100644
--- a/packages/koa/package.json
+++ b/packages/koa/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jsonql-koa",
-  "version": "1.4.6",
+  "version": "1.4.7",
   "description": "jsonql Koa middleware",
   "main": "main.js",
   "module": "index.js",
diff --git a/packages/koa/src/options/process-jwt-keys.js b/packages/koa/src/options/process-jwt-keys.js
index 3be63d4568f6bc0085333c7f1bea356b059a4fc9..a610011942baa4f62e6c9c06c6fcf79f16ca613c 100644
--- a/packages/koa/src/options/process-jwt-keys.js
+++ b/packages/koa/src/options/process-jwt-keys.js
@@ -34,7 +34,6 @@ const getKeysFromCache = (ctx, config) => {
         return _.extend(config, { publicKey, privateKey })
       }
     }
-    // debug('getter', getter)
   }
   return false;
 }
@@ -51,9 +50,12 @@ const getCreatedKeys = (ctx, config) => {
     return config[jwtProcessKey]
       .then( result => _.extend( config, _.mapValues(result, value => fsx.readFileSync(value) ) ) )
       .then(keys => {
-        _.forEach(keys, (value, key) => {
-          setter(key, value)
-        })
+        // have to make sure the setter is presented
+        if (typeof setter === 'function') {
+          _.forEach(keys, (value, key) => {
+            setter(key, value)
+          })
+        }
         return keys;
       })
   }
diff --git a/packages/koa/tests/config.test.js b/packages/koa/tests/config.test.js
index 1f5dfc4854cbde8bfaa3d4d8dd105d5af254e359..77f8a61dbd5d328f0470ff5338c566ab1872a876 100644
--- a/packages/koa/tests/config.test.js
+++ b/packages/koa/tests/config.test.js
@@ -28,6 +28,7 @@ let ctx = {
 }
 
 test.after( t => {
+  fsx.removeSync(contractDir)
   fsx.removeSync(keysDir)
 })