diff --git a/setup/linux-installer.py b/setup/linux-installer.py
index 672f3ce5af..04914f5f71 100644
--- a/setup/linux-installer.py
+++ b/setup/linux-installer.py
@@ -32,7 +32,7 @@ if py3:
     from urllib.parse import urlparse
     from urllib.request import BaseHandler, build_opener, Request, urlopen, getproxies, addinfourl
     import http.client as httplib
-    encode_for_subprocess = lambda x:x
+    encode_for_subprocess = lambda x: x
 else:
     from future_builtins import map
     from urlparse import urlparse
diff --git a/setup/linux-installer.sh b/setup/linux-installer.sh
index 065c593991..fd35b0819a 100644
--- a/setup/linux-installer.sh
+++ b/setup/linux-installer.sh
@@ -81,7 +81,7 @@ if py3:
     from urllib.parse import urlparse
     from urllib.request import BaseHandler, build_opener, Request, urlopen, getproxies, addinfourl
     import http.client as httplib
-    encode_for_subprocess = lambda x:x
+    encode_for_subprocess = lambda x: x
 else:
     from future_builtins import map
     from urlparse import urlparse