diff --git a/sphinx/application.py b/sphinx/application.py
index 93f12f3b6..f8074048b 100644
--- a/sphinx/application.py
+++ b/sphinx/application.py
@@ -463,9 +463,9 @@ class Sphinx(object):
         l = 0
         for item in iterable:
             if l == 0:
-                self.info(bold(summary), nonl=1)
+                self.info(bold(summary), nonl=True)
                 l = 1
-            self.info(colorfunc(stringify_func(item)) + ' ', nonl=1)
+            self.info(colorfunc(stringify_func(item)) + ' ', nonl=True)
             yield item
         if l == 1:
             self.info()
@@ -488,7 +488,7 @@ class Sphinx(object):
                 s += '\n'
             else:
                 s = term_width_line(s)
-            self.info(s, nonl=1)
+            self.info(s, nonl=True)
             yield item
         if l > 0:
             self.info()
diff --git a/sphinx/environment/__init__.py b/sphinx/environment/__init__.py
index d750b0284..f5cd1550b 100644
--- a/sphinx/environment/__init__.py
+++ b/sphinx/environment/__init__.py
@@ -494,7 +494,7 @@ class BuildEnvironment(object):
         # this cache also needs to be updated every time
         self._nitpick_ignore = set(self.config.nitpick_ignore)
 
-        app.info(bold('updating environment: '), nonl=1)
+        app.info(bold('updating environment: '), nonl=True)
 
         added, changed, removed = self.get_outdated_files(config_changed)