diff --git a/src/app/compiler.js b/src/app/compiler.js
index 436e2bb1bb..de0e24a57d 100644
--- a/src/app/compiler.js
+++ b/src/app/compiler.js
@@ -52,7 +52,7 @@ function Compiler (editor, queryParams, handleGithubCall, updateFiles) {
     files[utils.fileNameFromKey(editor.getCacheFile())] = input;
     gatherImports(files, missingInputs, function (input, error) {
       if (input === null) {
-        this.event.trigger('compilationFinished', [false, error, editor.getValue()]);
+        self.event.trigger('compilationFinished', [false, [error], editor.getValue()]);
       } else {
         var optimize = queryParams.get().optimize;
         compileJSON(input, optimize ? 1 : 0);
diff --git a/src/app/ui-helper.js b/src/app/ui-helper.js
index 18704d0d02..9d0f62310a 100644
--- a/src/app/ui-helper.js
+++ b/src/app/ui-helper.js
@@ -152,7 +152,8 @@ module.exports = {
       details.append(assembly);
     }
 
-    button.click(function () { this.detailsOpen[contractName] = !this.detailsOpen[contractName]; details.toggle(); });
+    var self = this;
+    button.click(function () { self.detailsOpen[contractName] = !self.detailsOpen[contractName]; details.toggle(); });
     if (this.detailsOpen[contractName]) {
       details.show();
     }