diff --git a/doc-src/_websitelayout.html b/doc-src/_websitelayout.html
index 13d71fcb3..3e9dfad70 100644
--- a/doc-src/_websitelayout.html
+++ b/doc-src/_websitelayout.html
@@ -6,7 +6,7 @@
         <span class="icon-bar"></span>
         <span class="icon-bar"></span>
       </a>
-      <a class="brand" href="@!urlTo("/index.html")!@">mitmproxy</a>
+      <a class="brand" href="@!urlTo('/index.html')!@">mitmproxy</a>
       <div class="nav">
         <ul class="nav">
           <li $!'class="active"' if this.match("/index.html", True) else ""!$> <a href="@!top!@/index.html">home</a> </li>
diff --git a/doc-src/mitmproxy.html b/doc-src/mitmproxy.html
index 678d41b58..d41c1b21a 100644
--- a/doc-src/mitmproxy.html
+++ b/doc-src/mitmproxy.html
@@ -9,7 +9,7 @@ documentation from any __mitmproxy__ screen.
 
 The flow list shows an index of captured flows in chronological order. 
 
-<img src="@!urlTo("screenshots/mitmproxy.png")!@"/>
+<img src="@!urlTo('screenshots/mitmproxy.png')!@"/>
 
 - __1__: A GET request, returning a 302 Redirect response.
 - __2__: A GET request, returning 16.75kb of text/html data.
@@ -32,7 +32,7 @@ interfaces.
 
 The __Flow View__ lets you inspect and manipulate a single flow:
 
-<img src="@!urlTo("screenshots/mitmproxy-flowview.png")!@"/>
+<img src="@!urlTo('screenshots/mitmproxy-flowview.png')!@"/>
 
 - __1__: Flow summary.
 - __2__: The Request/Response tabs, showing you which part of the flow you are
@@ -65,13 +65,13 @@ At the moment, the Grid Editor is used in four parts of mitmproxy:
 If there is is no data, an empty editor will be started to let you add some.
 Here is the editor showing the headers from a request:
 
-<img src="@!urlTo("screenshots/mitmproxy-kveditor.png")!@"/>
+<img src="@!urlTo('screenshots/mitmproxy-kveditor.png')!@"/>
 
 To edit, navigate to the key or value you want to modify using the arrow or vi
 navigation keys, and press enter. The background color will change to show that
 you are in edit mode for the specified field:
 
-<img src="@!urlTo("screenshots/mitmproxy-kveditor-editmode.png")!@"/>
+<img src="@!urlTo('screenshots/mitmproxy-kveditor-editmode.png')!@"/>
 
 Modify the field as desired, then press escape to exit edit mode when you're
 done. You can also add a row (_a_ key), delete a row (_d_ key), spawn an
diff --git a/doc-src/transparent/linux.html b/doc-src/transparent/linux.html
index d07155aae..96b7132a1 100644
--- a/doc-src/transparent/linux.html
+++ b/doc-src/transparent/linux.html
@@ -3,7 +3,7 @@ achieve transparent mode.
 
 <ol class="tlist">
 
-    <li> <a href="@!urlTo("ssl.html")!@">Install the mitmproxy
+    <li> <a href="@!urlTo('ssl.html')!@">Install the mitmproxy
     certificates on the test device</a>. </li>
 
     <li> Enable IP forwarding:
@@ -40,4 +40,4 @@ iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 443 -j REDIRECT --to-port 8
 </ol>
 
 
-For a detailed walkthrough, have a look at the <a href="@!urlTo("tutorials/transparent-dhcp.html")!@"><i>Transparently proxify virtual machines</i></a> tutorial.
+For a detailed walkthrough, have a look at the <a href="@!urlTo('tutorials/transparent-dhcp.html')!@"><i>Transparently proxify virtual machines</i></a> tutorial.
diff --git a/doc-src/transparent/osx.html b/doc-src/transparent/osx.html
index 205e4c762..c1ae823d9 100644
--- a/doc-src/transparent/osx.html
+++ b/doc-src/transparent/osx.html
@@ -7,7 +7,7 @@ OSX.
 
 <ol class="tlist">
 
-    <li> <a href="@!urlTo("ssl.html")!@">Install the mitmproxy
+    <li> <a href="@!urlTo('ssl.html')!@">Install the mitmproxy
     certificates on the test device</a>. </li>
 
     <li> Enable IP forwarding:
diff --git a/doc-src/tutorials/gamecenter.html b/doc-src/tutorials/gamecenter.html
index f8ddb6668..d8209f5e5 100644
--- a/doc-src/tutorials/gamecenter.html
+++ b/doc-src/tutorials/gamecenter.html
@@ -17,14 +17,14 @@ Worm](http://itunes.apple.com/us/app/super-mega-worm/id388541990?mt=8) - a
 great little retro-apocalyptic sidescroller for the iPhone: 
 
 <center>
-    <img src="@!urlTo("tutorials/supermega.png")!@"/>
+    <img src="@!urlTo('tutorials/supermega.png')!@"/>
 </center>
 
 After finishing a game (take your time), watch the traffic flowing through
 mitmproxy:
 
 <center>
-    <img src="@!urlTo("tutorials/one.png")!@"/>
+    <img src="@!urlTo('tutorials/one.png')!@"/>
 </center>
 
 We see a bunch of things we might expect - initialisation, the retrieval of
@@ -99,7 +99,7 @@ replay.
 ## The glorious result and some intrigue
 
 <center>
-    <img src="@!urlTo("tutorials/leaderboard.png")!@"/>
+    <img src="@!urlTo('tutorials/leaderboard.png')!@"/>
 </center>
 
 And that's it - according to the records, I am the greatest Super Mega Worm
diff --git a/doc-src/tutorials/transparent-dhcp.html b/doc-src/tutorials/transparent-dhcp.html
index e0148afa7..ce8a10fd8 100644
--- a/doc-src/tutorials/transparent-dhcp.html
+++ b/doc-src/tutorials/transparent-dhcp.html
@@ -4,10 +4,10 @@ This walkthrough illustrates how to set up transparent proxying with mitmproxy.
     The network setup is simple:  `internet <--> proxy vm <--> (virtual) internal network`.  
     For the proxy machine, *eth0* represents the outgoing network. *eth1* is connected to the internal network that will be proxified, using a static ip (192.168.3.1).  
     <hr>VirtualBox configuration:
-    <img src="@!urlTo("tutorials/transparent-dhcp/step1_vbox_eth0.png")!@"/><br><br>
-    <img src="@!urlTo("tutorials/transparent-dhcp/step1_vbox_eth1.png")!@"/>  
+    <img src="@!urlTo('tutorials/transparent-dhcp/step1_vbox_eth0.png')!@"/><br><br>
+    <img src="@!urlTo('tutorials/transparent-dhcp/step1_vbox_eth1.png')!@"/>  
     <br>Proxy VM:
-    <img src="@!urlTo("tutorials/transparent-dhcp/step1_proxy.png")!@"/>  
+    <img src="@!urlTo('tutorials/transparent-dhcp/step1_proxy.png')!@"/>  
     <hr>
 2.  **Configure DHCP and DNS**  
     We use dnsmasq to provide DHCP and DNS in our internal network. 
@@ -34,7 +34,7 @@ This walkthrough illustrates how to set up transparent proxying with mitmproxy.
         `sudo service dnsmasq restart`
         <hr>
         Your proxied machine's network settings should now look similar to this:
-        <img src="@!urlTo("tutorials/transparent-dhcp/step2_proxied_vm.png")!@"/>
+        <img src="@!urlTo('tutorials/transparent-dhcp/step2_proxied_vm.png')!@"/>
         <hr>
 
 3.  **Set up traffic redirection to mitmproxy**  
@@ -46,7 +46,7 @@ This walkthrough illustrates how to set up transparent proxying with mitmproxy.
         -j REDIRECT --to-port 8080
     </pre>
 
-4.  If required, <a href="@!urlTo("ssl.html")!@">install the mitmproxy
+4.  If required, <a href="@!urlTo('ssl.html')!@">install the mitmproxy
     certificates on the test device</a>.
 
 5.  Finally, we can run <code>mitmproxy -T</code>.