diff --git a/core/netcreds.py b/core/netcreds.py
index f4b4723..9e8be01 100644
--- a/core/netcreds.py
+++ b/core/netcreds.py
@@ -916,7 +916,7 @@ def get_login_pass(body):
 
 def printer(src_ip_port, dst_ip_port, msg):
     if dst_ip_port != None:
-        print_str = '[{} > {}] {}'.format((src_ip_port, dst_ip_port, msg))
+        print_str = '[{} > {}] {}'.format(src_ip_port, dst_ip_port, msg)
         # All credentials will have dst_ip_port, URLs will not
 
         log.info("{}".format(print_str))
diff --git a/core/servers/DNS.py b/core/servers/DNS.py
index 35e592c..0599e7b 100755
--- a/core/servers/DNS.py
+++ b/core/servers/DNS.py
@@ -366,7 +366,8 @@ class DNSHandler():
         #First proxy the request with the real domain
         q = DNSRecord.question(real_domain).pack()
         r = self.proxyrequest(q, *nameserver_tuple)
-        
+        if r is None: return None
+
         #Parse the answer
         dns_rr = DNSRecord.parse(r).rr
 
diff --git a/plugins/inject.py b/plugins/inject.py
index 27bda03..bc7ca9c 100644
--- a/plugins/inject.py
+++ b/plugins/inject.py
@@ -64,7 +64,10 @@ class Inject(Plugin):
         try:
             mime = response.headers['Content-Type']
         except KeyError:
-            return
+            return {'response': response, 'request':request, 'data': data}
+
+        if "text/html" not in mime:
+            return {'response': response, 'request':request, 'data': data}
 
         if "charset" in mime:
             match = re.search('charset=(.*)', mime)