diff --git a/alethzero/MainWin.cpp b/alethzero/MainWin.cpp
index 85c8ddb32..c6adcfbbf 100644
--- a/alethzero/MainWin.cpp
+++ b/alethzero/MainWin.cpp
@@ -25,6 +25,7 @@
 #include <QtWidgets/QMessageBox>
 #include <QtWidgets/QInputDialog>
 #include <QtWebKitWidgets/QWebFrame>
+#include <QWebSettings>
 #include <QtGui/QClipboard>
 #include <QtCore/QtCore>
 #include <boost/algorithm/string.hpp>
@@ -137,6 +138,7 @@ Main::Main(QWidget *parent) :
 		m_ethereum = new QEthereum(this, ethereum(), owned());
 		m_whisper = new QWhisper(this, whisper());
 
+		QWebSettings::globalSettings()->setAttribute(QWebSettings::DeveloperExtrasEnabled, true);
 		QWebFrame* f = ui->webView->page()->mainFrame();
 		f->disconnect(SIGNAL(javaScriptWindowObjectCleared()));
 		auto qeth = m_ethereum;
diff --git a/libqethereum/QEthereum.h b/libqethereum/QEthereum.h
index 225c04e66..83ee53d43 100644
--- a/libqethereum/QEthereum.h
+++ b/libqethereum/QEthereum.h
@@ -269,8 +269,6 @@ private:
 	frame->evaluateJavaScript("String.prototype.dec = function() { env.warn('THIS CALL IS DEPRECATED. USE eth.* INSTEAD.'); return eth.toDecimal(this) }"); \
 	frame->evaluateJavaScript("String.prototype.fix = function() { env.warn('THIS CALL IS DEPRECATED. USE eth.* INSTEAD.'); return eth.toFixed(this) }"); \
 	frame->evaluateJavaScript("String.prototype.sha3 = function() { env.warn('THIS CALL IS DEPRECATED. USE eth.* INSTEAD.'); return eth.sha3old(this) }"); \
-	frame->evaluateJavaScript("console.log = env.note"); \
-	frame->evaluateJavaScript("window.onerror = function (errorMsg, url, lineNumber, column, errorObj) { env.warn('Error: ' + errorMsg + ', Script: ' + url + ', Line: ' + lineNumber + ', Column: ' + column + ', StackTrace: ' + String(errorObj)) }"); \
 	frame->evaluateJavaScript("shh.makeWatch = function(a) { var ww = shh.newWatch(a); var ret = { w: ww }; ret.uninstall = function() { shh.killWatch(w); }; ret.changed = function(f) { shh.watchChanged.connect(function(nw) { if (nw == ww) f() }); }; ret.messages = function() { return JSON.parse(shh.watchMessages(this.w)) }; return ret; }"); \
 	frame->evaluateJavaScript("shh.watch = function(a) { return shh.makeWatch(JSON.stringify(a)) }"); \
 }