diff --git a/gunicorn/app/base.py b/gunicorn/app/base.py
index bc6ea188..4295230d 100644
--- a/gunicorn/app/base.py
+++ b/gunicorn/app/base.py
@@ -2,6 +2,7 @@
 #
 # This file is part of gunicorn released under the MIT license.
 # See the NOTICE for more information.
+from __future__ import print_function
 
 import os
 import sys
@@ -34,7 +35,7 @@ class BaseApplication(object):
             self.load_default_config()
             self.load_config()
         except Exception as e:
-            sys.stderr.write("\nError: %s\n" % str(e))
+            print("\nError: %s" % str(e), file=sys.stderr)
             sys.stderr.flush()
             sys.exit(1)
 
@@ -70,7 +71,7 @@ class BaseApplication(object):
         try:
             Arbiter(self).run()
         except RuntimeError as e:
-            sys.stderr.write("\nError: %s\n\n" % e)
+            print("\nError: %s\n" % e, file=sys.stderr)
             sys.stderr.flush()
             sys.exit(1)
 
@@ -91,8 +92,9 @@ class Application(BaseApplication):
         try:
             execfile_(filename, cfg, cfg)
         except Exception:
-            print("Failed to read config file: %s" % filename)
+            print("Failed to read config file: %s" % filename, file=sys.stderr)
             traceback.print_exc()
+            sys.stderr.flush()
             sys.exit(1)
 
         return cfg
@@ -118,7 +120,8 @@ class Application(BaseApplication):
             try:
                 self.cfg.set(k.lower(), v)
             except:
-                sys.stderr.write("Invalid value for %s: %s\n\n" % (k, v))
+                print("Invalid value for %s: %s\n" % (k, v), file=sys.stderr)
+                sys.stderr.flush()
                 raise
 
         return cfg
@@ -162,7 +165,8 @@ class Application(BaseApplication):
             try:
                 self.load()
             except:
-                sys.stderr.write("\nError while loading the application:\n\n")
+                msg = "\nError while loading the application:\n"
+                print(msg, file=sys.stderr)
                 traceback.print_exc()
                 sys.stderr.flush()
                 sys.exit(1)
diff --git a/gunicorn/app/django_wsgi.py b/gunicorn/app/django_wsgi.py
index 1b1374e2..31d8aec2 100644
--- a/gunicorn/app/django_wsgi.py
+++ b/gunicorn/app/django_wsgi.py
@@ -4,6 +4,7 @@
 # See the NOTICE for more information.
 
 """ module used to build the django wsgi application """
+from __future__ import print_function
 
 import os
 import re
@@ -36,9 +37,9 @@ def make_wsgi_application():
     if get_validation_errors(s):
         s.seek(0)
         error = s.read()
-        sys.stderr.write("One or more models did not validate:\n%s" % error)
+        msg = "One or more models did not validate:\n%s" % error
+        print(msg, file=sys.stderr)
         sys.stderr.flush()
-
         sys.exit(1)
 
     translation.activate(settings.LANGUAGE_CODE)
diff --git a/gunicorn/app/pasterapp.py b/gunicorn/app/pasterapp.py
index d24ea780..ee40fd8f 100644
--- a/gunicorn/app/pasterapp.py
+++ b/gunicorn/app/pasterapp.py
@@ -2,6 +2,7 @@
 #
 # This file is part of gunicorn released under the MIT license.
 # See the NOTICE for more information.
+from __future__ import print_function
 
 import os
 import pkg_resources
@@ -155,7 +156,7 @@ class PasterServerApplication(PasterBaseApplication):
                 if k.lower() in self.cfg.settings and v is not None:
                     self.cfg.set(k.lower(), v)
         except Exception as e:
-            sys.stderr.write("\nConfig error: %s\n" % str(e))
+            print("\nConfig error: %s" % str(e), file=sys.stderr)
             sys.stderr.flush()
             sys.exit(1)
 
diff --git a/gunicorn/arbiter.py b/gunicorn/arbiter.py
index aa89b753..d92444e1 100644
--- a/gunicorn/arbiter.py
+++ b/gunicorn/arbiter.py
@@ -2,6 +2,7 @@
 #
 # This file is part of gunicorn released under the MIT license.
 # See the NOTICE for more information.
+from __future__ import print_function
 
 import errno
 import os
@@ -520,8 +521,7 @@ class Arbiter(object):
         except AppImportError as e:
             self.log.debug("Exception while loading the application: \n%s",
                     traceback.format_exc())
-
-            sys.stderr.write("%s\n" % e)
+            print("%s" % e, file=sys.stderr)
             sys.stderr.flush()
             sys.exit(self.APP_LOAD_ERROR)
         except:
diff --git a/gunicorn/util.py b/gunicorn/util.py
index 2df3f574..42f8b8a4 100644
--- a/gunicorn/util.py
+++ b/gunicorn/util.py
@@ -3,6 +3,7 @@
 # This file is part of gunicorn released under the MIT license.
 # See the NOTICE for more information.
 
+from __future__ import print_function
 
 import email.utils
 import fcntl
@@ -520,13 +521,13 @@ def is_fileobject(obj):
 
 
 def warn(msg):
-    sys.stderr.write("!!!\n")
+    print("!!!", file=sys.stderr)
 
     lines = msg.splitlines()
     for i, line in enumerate(lines):
         if i == 0:
             line = "WARNING: %s" % line
-        sys.stderr.write("!!! %s\n" % line)
+        print("!!! %s" % line, file=sys.stderr)
 
-    sys.stderr.write("!!!\n\n")
+    print("!!!\n", file=sys.stderr)
     sys.stderr.flush()