diff --git a/cowrie/commands/curl.py b/cowrie/commands/curl.py
index b745aca..b20fd0c 100644
--- a/cowrie/commands/curl.py
+++ b/cowrie/commands/curl.py
@@ -209,11 +209,11 @@ class HTTPProgressDownloader(client.HTTPDownloader):
     def gotHeaders(self, headers):
         if self.status == '200':
             #self.curl.writeln('200 OK')
-            if headers.has_key('content-length'):
+            if 'content-length' in headers:
                 self.totallength = int(headers['content-length'][0])
             else:
                 self.totallength = 0
-            if headers.has_key('content-type'):
+            if 'content-type' in headers:
                 self.contenttype = headers['content-type'][0]
             else:
                 self.contenttype = 'text/whatever'
diff --git a/cowrie/commands/wget.py b/cowrie/commands/wget.py
index 1ae9044..6736297 100644
--- a/cowrie/commands/wget.py
+++ b/cowrie/commands/wget.py
@@ -215,11 +215,11 @@ class HTTPProgressDownloader(client.HTTPDownloader):
         if self.status == '200':
             if self.quiet == False:
                 self.wget.writeln('200 OK')
-            if headers.has_key('content-length'):
+            if 'content-length' in headers:
                 self.totallength = int(headers['content-length'][0])
             else:
                 self.totallength = 0
-            if headers.has_key('content-type'):
+            if 'content-type' in headers:
                 self.contenttype = headers['content-type'][0]
             else:
                 self.contenttype = 'text/whatever'