diff --git a/src/display/font_loader.js b/src/display/font_loader.js
index a1870f5fc..10bdefd3d 100644
--- a/src/display/font_loader.js
+++ b/src/display/font_loader.js
@@ -59,13 +59,10 @@ FontLoader.prototype = {
   },
 
   clear: function fontLoaderClear() {
-    var styleElement = this.styleElement;
-    if (styleElement) {
-      if (styleElement.parentNode) {
-        // Prevent "TypeError: styleElement.parentNode is null" during testing.
-        styleElement.parentNode.removeChild(styleElement);
-      }
-      styleElement = this.styleElement = null;
+    if (this.styleElement) {
+      // Note: ChildNode.remove doesn't throw if the parentNode is undefined.
+      this.styleElement.remove();
+      this.styleElement = null;
     }
     if (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('MOZCENTRAL')) {
       this.nativeFontFaces.forEach(function(nativeFontFace) {
diff --git a/web/compatibility.js b/web/compatibility.js
index 094b9629e..2b4fe85f4 100644
--- a/web/compatibility.js
+++ b/web/compatibility.js
@@ -646,4 +646,17 @@ if (typeof PDFJS === 'undefined') {
   });
 })();
 
+// Provides support for ChildNode.remove in legacy browsers.
+// Support: IE.
+(function checkChildNodeRemove() {
+  if (typeof Element.prototype.remove !== 'undefined') {
+    return;
+  }
+  Element.prototype.remove = function () {
+    if (this.parentNode) {
+      this.parentNode.removeChild(this);
+    }
+  };
+})();
+
 }).call((typeof window === 'undefined') ? this : window);
diff --git a/web/grab_to_pan.js b/web/grab_to_pan.js
index 803bdaa62..bdd37a5dd 100644
--- a/web/grab_to_pan.js
+++ b/web/grab_to_pan.js
@@ -184,9 +184,8 @@
       this.element.removeEventListener('scroll', this._endPan, true);
       this.document.removeEventListener('mousemove', this._onmousemove, true);
       this.document.removeEventListener('mouseup', this._endPan, true);
-      if (this.overlay.parentNode) {
-        this.overlay.parentNode.removeChild(this.overlay);
-      }
+      // Note: ChildNode.remove doesn't throw if the parentNode is undefined.
+      this.overlay.remove();
     }
   };