diff --git a/package-lock.json b/package-lock.json
index f0eb81123..28dee3f05 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9972,6 +9972,7 @@
             "version": "5.5.11",
             "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-5.5.11.tgz",
             "integrity": "sha512-3bjO7UwWfA2CV7lmwYMBzj4fQ6Cq+ftHc2MvUe+WMS7wcdJ1LosDWmdjPQanYp2dBRj572p7PeU81JUxHKOcBA==",
+            "license": "Apache-2.0",
             "dependencies": {
                 "symbol-observable": "1.0.1"
             },
@@ -12183,7 +12184,7 @@
             "license": "EPL-2.0 OR W3C-20150513",
             "dependencies": {
                 "@node-wot/core": "0.8.17",
-                "rxjs": "^5.5.11"
+                "rxjs": "5.5.11"
             }
         },
         "packages/binding-http": {
@@ -12243,7 +12244,7 @@
             "dependencies": {
                 "@node-wot/core": "0.8.17",
                 "node-mbus": "^2.2.4",
-                "rxjs": "^5.5.11"
+                "rxjs": "5.5.11"
             }
         },
         "packages/binding-modbus": {
@@ -12276,7 +12277,7 @@
                 "@node-wot/core": "0.8.17",
                 "case-1.5.3": "npm:case@^1.5.3",
                 "node-netconf": "^1.1.2",
-                "rxjs": "^5.5.11",
+                "rxjs": "5.5.11",
                 "url-parse": "^1.5.8"
             },
             "devDependencies": {
diff --git a/packages/binding-file/package.json b/packages/binding-file/package.json
index f5d2d74ef..418ecb180 100644
--- a/packages/binding-file/package.json
+++ b/packages/binding-file/package.json
@@ -15,7 +15,7 @@
     "types": "dist/file.d.ts",
     "dependencies": {
         "@node-wot/core": "0.8.17",
-        "rxjs": "^5.5.11"
+        "rxjs": "5.5.11"
     },
     "scripts": {
         "build": "tsc -b",
diff --git a/packages/binding-mbus/package.json b/packages/binding-mbus/package.json
index caf3b10f2..390d7757d 100644
--- a/packages/binding-mbus/package.json
+++ b/packages/binding-mbus/package.json
@@ -16,7 +16,7 @@
     "dependencies": {
         "@node-wot/core": "0.8.17",
         "node-mbus": "^2.2.4",
-        "rxjs": "^5.5.11"
+        "rxjs": "5.5.11"
     },
     "scripts": {
         "build": "tsc -b",
diff --git a/packages/binding-netconf/package.json b/packages/binding-netconf/package.json
index d5ee0f01f..a7f73b2e7 100644
--- a/packages/binding-netconf/package.json
+++ b/packages/binding-netconf/package.json
@@ -17,7 +17,7 @@
         "@node-wot/core": "0.8.17",
         "case-1.5.3": "npm:case@^1.5.3",
         "node-netconf": "^1.1.2",
-        "rxjs": "^5.5.11",
+        "rxjs": "5.5.11",
         "url-parse": "^1.5.8"
     },
     "scripts": {
diff --git a/packages/core/src/wot-impl.ts b/packages/core/src/wot-impl.ts
index 2228bad35..7d8782b42 100644
--- a/packages/core/src/wot-impl.ts
+++ b/packages/core/src/wot-impl.ts
@@ -28,7 +28,7 @@ import { inspect } from "util";
 const { debug } = createLoggers("core", "wot-impl");
 
 class ThingDiscoveryProcess implements WoT.ThingDiscoveryProcess {
-    constructor(private directory: ConsumedThing, public filter?: WoT.ThingFilter) {
+    constructor(private directory: WoT.ConsumedThing, public filter?: WoT.ThingFilter) {
         this.filter = filter;
         this.done = false;
     }
@@ -101,7 +101,7 @@ export default class WoTImpl {
     }
 
     /** @inheritDoc */
-    async consume(td: WoT.ThingDescription): Promise<ConsumedThing> {
+    async consume(td: WoT.ThingDescription): Promise<WoT.ConsumedThing> {
         try {
             const thing = parseTD(JSON.stringify(td), true);
             const newThing: ConsumedThing = new ConsumedThing(this.srv, thing as ThingModel);