diff --git a/frontend/packages/draft-js/index.js b/frontend/packages/draft-js/index.js
index f02109f971..eae0a5f3c0 100644
--- a/frontend/packages/draft-js/index.js
+++ b/frontend/packages/draft-js/index.js
@@ -22,7 +22,8 @@ export const {
 } = pkg;
 
 import DraftPasteProcessor from 'draft-js/lib/DraftPasteProcessor.js';
-import {Map, OrderedSet} from "immutable";
+import Immutable from "immutable";
+const {Map, OrderedSet} = Immutable;
 
 function isDefined(v) {
   return v !== undefined && v !== null;
diff --git a/frontend/src/app/main/data/workspace/clipboard.cljs b/frontend/src/app/main/data/workspace/clipboard.cljs
index ac1fb64e9a..21346c879c 100644
--- a/frontend/src/app/main/data/workspace/clipboard.cljs
+++ b/frontend/src/app/main/data/workspace/clipboard.cljs
@@ -1217,7 +1217,7 @@
               (rx/mapcat (fn [blob]
                            ;; Resolve the deferred with the fetched blob; the browser
                            ;; will now complete the clipboard write it started earlier.
-                           (p/resolve! deferred blob)
+                           (p/resolve deferred blob)
                            (rx/from write-promise)))
               (rx/map (fn [_]
                         (ntf/success (tr "workspace.clipboard.image-copied"))))
@@ -1225,5 +1225,5 @@
                           (js/console.error "clipboard error:" e)
                           ;; Reject the deferred in case the error occurred before the
                           ;; blob was fetched, so the pending clipboard write is cancelled.
-                          (p/reject! deferred e)
+                          (p/reject deferred e)
                           (rx/of (ntf/error (tr "workspace.clipboard.image-copy-failed")))))))))))
diff --git a/frontend/src/app/plugins/register.cljs b/frontend/src/app/plugins/register.cljs
index e4837ce75b..9180463c69 100644
--- a/frontend/src/app/plugins/register.cljs
+++ b/frontend/src/app/plugins/register.cljs
@@ -35,7 +35,7 @@
   "Signals that plugins runtime has been initialized. Called by app.plugins/init-plugins-runtime."
   []
   (when (p/pending? runtime-ready-promise)
-    (p/resolve! runtime-ready-promise true)))
+    (p/resolve runtime-ready-promise true)))
 
 ;; Stores the installed plugins information
 (defonce ^:private registry (atom {}))