diff --git a/src/dragula-and-drop.js b/src/dragula-and-drop.js
index 4eea5a0..d94ddb9 100644
--- a/src/dragula-and-drop.js
+++ b/src/dragula-and-drop.js
@@ -120,6 +120,7 @@ export class DragulaAndDrop {
       ignoreInputTextSelection: this._convertToBooleanIfRequired(this._getOption('ignoreInputTextSelection')),
       mirrorContainer: this._getOption('mirrorContainer')
     };
+
     return result;
   }
 
@@ -137,6 +138,6 @@ export class DragulaAndDrop {
     if (typeof option === 'string') {
       return option.toLowerCase() === 'true';
     }
-    return new Boolean(option);
+    return new Boolean(option).valueOf();
   }
 }
diff --git a/src/dragula.js b/src/dragula.js
index 6b5c012..d68e66f 100644
--- a/src/dragula.js
+++ b/src/dragula.js
@@ -441,7 +441,7 @@ export class Dragula {
     if (this._mirror) {
       classes.rm(this.options.mirrorContainer, 'gu-unselectable');
       touchy(document.documentElement, 'removeEventListener', 'mousemove', this.boundDrag);
-      Util.remove(this._mirror);
+      Util.getParent(this._mirror).removeChild(this._mirror);
       this._mirror = null;
     }
   }
diff --git a/src/util.js b/src/util.js
index c248d04..2c672cb 100644
--- a/src/util.js
+++ b/src/util.js
@@ -99,18 +99,6 @@ class _Util {
     return immediate;
   }
 
-  remove(node) {
-    if (node) {
-      if (!('remove' in Element.prototype)) {
-        if (node.parentNode) {
-          node.parentNode.removeChild(node);
-        }
-      } else {
-        node.remove();
-      }
-    }
-  }
-
   getViewModel(element) {
     if (element && element.au) {
       if (element.au.controller.viewModel.currentViewModel)
diff --git a/test/unit/dragulaanddrop.spec.js b/test/unit/dragulaanddrop.spec.js
index 5b8070c..3fab7e8 100644
--- a/test/unit/dragulaanddrop.spec.js
+++ b/test/unit/dragulaanddrop.spec.js
@@ -82,7 +82,7 @@ describe('the Dragula and Drop Custom Element', function() {
     this.dragulaAndDrop.dragula.options.isContainer(this.container);
 
     //assert
-    expect(isBoolean).toBeTruthy();
+    expect(isBoolean).toBeFalsy();
   });
 
   it('should check copy-option correctly (function)', function() {