diff --git a/src/custombox.spec.ts b/src/custombox.spec.ts
index 9f368a5..eb86acb 100644
--- a/src/custombox.spec.ts
+++ b/src/custombox.spec.ts
@@ -981,7 +981,7 @@ describe('Custombox', () => {
       }, 200);
     });
 
-    it('should show loader when the overlay is disabled', (done) => {
+    it('should show loader when the overlay is disabled', () => {
       new (Custombox as any).modal({
         content: {
           effect: 'fadein',
@@ -993,12 +993,9 @@ describe('Custombox', () => {
         loader: {
           active: true
         }
-      });
+      }).open();
 
-      setTimeout(() => {
-        expect(hasElement('.custombox-loader')).toBe(true);
-        done();
-      }, 200);
+      expect(hasElement('.custombox-loader')).toBe(true);
     });
 
     it(`shouldn't show loader`, (done) => {
diff --git a/src/custombox.ts b/src/custombox.ts
index a3aa43e..fcf8d90 100644
--- a/src/custombox.ts
+++ b/src/custombox.ts
@@ -484,28 +484,12 @@ namespace Custombox {
 
     constructor(options: OptionsSchema) {
       this.options = new Options(options);
-
-      // Create loader
-      if (this.options.loader.active) {
-        this.loader = new Loader(this.options);
-      }
-
-      // Create container
-      if (Snippet.check(containerValues, this.options.content.effect)) {
-        this.container = new Container(this.options);
-      }
-
-      // Create overlay
-      if (this.options.overlay.active) {
-        this.overlay = new Overlay(this.options);
-      }
-
-      // Create content
-      this.content = new Content(this.options);
     }
 
     // Public methods
     open(): void {
+      this.build();
+
       if (this.options.loader.active) {
         this.loader.show();
       }
@@ -556,6 +540,27 @@ namespace Custombox {
         });
     }
 
+    // Private methods
+    build(): void {
+      // Create loader
+      if (this.options.loader.active) {
+        this.loader = new Loader(this.options);
+      }
+
+      // Create container
+      if (Snippet.check(containerValues, this.options.content.effect)) {
+        this.container = new Container(this.options);
+      }
+
+      // Create overlay
+      if (this.options.overlay.active) {
+        this.overlay = new Overlay(this.options);
+      }
+
+      // Create content
+      this.content = new Content(this.options);
+    }
+
     static close(id?: string): void {
       const event: Event = new Event(`${CB}:close`);
       let elements: NodeListOf<Element> = document.querySelectorAll(`.${CB}-content`);