diff --git a/setup.py b/setup.py
index 69f1726..ff542a4 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@ from setuptools import setup
 from setuptools import find_packages
 
 __author__ = 'Ryan McGrath <ryan@venodesigns.net>'
-__version__ = '1.3.4'
+__version__ = '1.3.5'
 
 setup(
 	# Basic package information.
diff --git a/twython/twython.py b/twython/twython.py
index d1822ce..e5a3b3f 100644
--- a/twython/twython.py
+++ b/twython/twython.py
@@ -9,7 +9,7 @@
 """
 
 __author__ = "Ryan McGrath <ryan@venodesigns.net>"
-__version__ = "1.3.4"
+__version__ = "1.3.5"
 
 import urllib
 import urllib2
@@ -210,7 +210,7 @@ class Twython(object):
 	
 	@staticmethod
 	def constructApiURL(base_url, params):
-		return base_url + "?" + "&".join(["%s=%s" %(Twython.unicode2utf8(key), Twython.unicode2utf8(value)) for (key, value) in params.iteritems()])
+		return base_url + "?" + "&".join(["%s=%s" %(Twython.unicode2utf8(key), urllib.quote_plus(Twython.unicode2utf8(value))) for (key, value) in params.iteritems()])
 	
 	@staticmethod
 	def shortenURL(url_to_shorten, shortener = "http://is.gd/api.php", query = "longurl"):
diff --git a/twython3k/twython.py b/twython3k/twython.py
index ee3f7ad..406dbc6 100644
--- a/twython3k/twython.py
+++ b/twython3k/twython.py
@@ -9,7 +9,7 @@
 """
 
 __author__ = "Ryan McGrath <ryan@venodesigns.net>"
-__version__ = "1.3.4"
+__version__ = "1.3.5"
 
 import urllib.request, urllib.parse, urllib.error
 import urllib.request, urllib.error, urllib.parse
@@ -210,7 +210,7 @@ class Twython(object):
 	
 	@staticmethod
 	def constructApiURL(base_url, params):
-		return base_url + "?" + "&".join(["%s=%s" %(Twython.unicode2utf8(key), Twython.unicode2utf8(value)) for (key, value) in params.items()])
+		return base_url + "?" + "&".join(["%s=%s" %(Twython.unicode2utf8(key), urllib.parse.quote_plus(Twython.unicode2utf8(value))) for (key, value) in params.items()])
 	
 	@staticmethod
 	def shortenURL(url_to_shorten, shortener = "http://is.gd/api.php", query = "longurl"):