diff --git a/runtime/assets/wails.js b/runtime/assets/wails.js
index 51296b10d..0971f49ea 100644
--- a/runtime/assets/wails.js
+++ b/runtime/assets/wails.js
@@ -1 +1 @@
-!function(n){var e={};function t(r){if(e[r])return e[r].exports;var o=e[r]={i:r,l:!1,exports:{}};return n[r].call(o.exports,o,o.exports,t),o.l=!0,o.exports}t.m=n,t.c=e,t.d=function(n,e,r){t.o(n,e)||Object.defineProperty(n,e,{enumerable:!0,get:r})},t.r=function(n){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(n,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(n,"__esModule",{value:!0})},t.t=function(n,e){if(1&e&&(n=t(n)),8&e)return n;if(4&e&&"object"==typeof n&&n&&n.__esModule)return n;var r=Object.create(null);if(t.r(r),Object.defineProperty(r,"default",{enumerable:!0,value:n}),2&e&&"string"!=typeof n)for(var o in n)t.d(r,o,function(e){return n[e]}.bind(null,o));return r},t.n=function(n){var e=n&&n.__esModule?function(){return n.default}:function(){return n};return t.d(e,"a",e),e},t.o=function(n,e){return Object.prototype.hasOwnProperty.call(n,e)},t.p="",t(t.s=0)}([function(n,e,t){"use strict";t.r(e),t.d(e,"Init",(function(){return L}));var r={};t.r(r),t.d(r,"Debug",(function(){return l})),t.d(r,"Info",(function(){return s})),t.d(r,"Warning",(function(){return d})),t.d(r,"Error",(function(){return f})),t.d(r,"Fatal",(function(){return w}));var o={};t.r(o),t.d(o,"OpenURL",(function(){return h})),t.d(o,"OpenFile",(function(){return y}));var i={};t.r(i),t.d(i,"New",(function(){return N}));var a=[];function c(n,e,t){var r={type:n,callbackID:t,payload:e};!function(n){if(window.wailsbridge?window.wailsbridge.websocket.send(n):window.external.invoke(n),a.length>0)for(var e=0;e<a.length;e++)a[e](n)}(JSON.stringify(r))}function u(n,e){c("log",{level:n,message:e})}function l(n){u("debug",n)}function s(n){u("info",n)}function d(n){u("warning",n)}function f(n){u("error",n)}function w(n){u("fatal",n)}var p,v={};function g(n,e,t){return null!=t&&null!=t||(t=0),new Promise((function(r,o){var i;do{i=n+"-"+p()}while(v[i]);if(t>0)var a=setTimeout((function(){o(Error("Call to "+n+" timed out. 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\ No newline at end of file
+!function(n){var e={};function t(r){if(e[r])return e[r].exports;var o=e[r]={i:r,l:!1,exports:{}};return n[r].call(o.exports,o,o.exports,t),o.l=!0,o.exports}t.m=n,t.c=e,t.d=function(n,e,r){t.o(n,e)||Object.defineProperty(n,e,{enumerable:!0,get:r})},t.r=function(n){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(n,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(n,"__esModule",{value:!0})},t.t=function(n,e){if(1&e&&(n=t(n)),8&e)return n;if(4&e&&"object"==typeof n&&n&&n.__esModule)return n;var r=Object.create(null);if(t.r(r),Object.defineProperty(r,"default",{enumerable:!0,value:n}),2&e&&"string"!=typeof n)for(var o in n)t.d(r,o,function(e){return n[e]}.bind(null,o));return r},t.n=function(n){var e=n&&n.__esModule?function(){return n.default}:function(){return n};return t.d(e,"a",e),e},t.o=function(n,e){return Object.prototype.hasOwnProperty.call(n,e)},t.p="",t(t.s=0)}([function(n,e,t){"use strict";t.r(e),t.d(e,"Init",(function(){return L}));var r={};t.r(r),t.d(r,"Debug",(function(){return l})),t.d(r,"Info",(function(){return s})),t.d(r,"Warning",(function(){return d})),t.d(r,"Error",(function(){return f})),t.d(r,"Fatal",(function(){return w}));var o={};t.r(o),t.d(o,"OpenURL",(function(){return h})),t.d(o,"OpenFile",(function(){return y}));var i={};t.r(i),t.d(i,"New",(function(){return N}));var a=[];function c(n,e,t){var r={type:n,callbackID:t,payload:e};!function(n){if(window.wailsbridge?window.wailsbridge.websocket.send(n):window.external.invoke(n),a.length>0)for(var e=0;e<a.length;e++)a[e](n)}(JSON.stringify(r))}function u(n,e){c("log",{level:n,message:e})}function l(n){u("debug",n)}function s(n){u("info",n)}function d(n){u("warning",n)}function f(n){u("error",n)}function w(n){u("fatal",n)}var p,v={};function g(n,e,t){return null!=t&&null!=t||(t=0),new Promise((function(r,o){var i;do{i=n+"-"+p()}while(v[i]);if(t>0)var a=setTimeout((function(){o(Error("Call to "+n+" timed out. 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\ No newline at end of file
diff --git a/runtime/js/core/main.js b/runtime/js/core/main.js
index 0b1bf1e47..797a8f1c8 100644
--- a/runtime/js/core/main.js
+++ b/runtime/js/core/main.js
@@ -21,13 +21,19 @@ import * as Store from './store';
 window.wails = window.wails || {};
 window.backend = {};
 
-// On webkit2gtk >= 2.32, the external object is not passed
-// to the window context,
-window.external = window.external || {
-	invoke: function(x) {
-		window.webkit.messageHandlers.external.postMessage(x);
-	}
-};
+// On webkit2gtk >= 2.32, the external object is not passed to the window context.
+// However, IE will throw a strict mode error if window.external is assigned to
+// so we need to make sure that line of code isn't reached in IE
+
+// Using !window.external transpiles to `window.external = window.external || ...`
+// so we have to use an explicit if statement to prevent webpack from optimizing the code.
+if (window.external == undefined) {
+	window.external = {
+		invoke: function(x) {
+			window.webkit.messageHandlers.external.postMessage(x);
+		}
+	};
+}
 
 // Setup internal calls
 var internal = {