diff --git a/GPy/testing/plotting_tests.py b/GPy/testing/plotting_tests.py
index 23564ff3..90dceab0 100644
--- a/GPy/testing/plotting_tests.py
+++ b/GPy/testing/plotting_tests.py
@@ -38,7 +38,7 @@ from nose import SkipTest
 
 try:
     import matplotlib
-    matplotlib.use('agg', warn=False)
+    matplotlib.use('agg')
 except ImportError:
     # matplotlib not installed
     from nose import SkipTest
diff --git a/travis_tests.py b/travis_tests.py
index bd3f5680..16713962 100644
--- a/travis_tests.py
+++ b/travis_tests.py
@@ -31,7 +31,7 @@
 
 #!/usr/bin/env python
 import matplotlib
-matplotlib.use('agg', warn=False)
+matplotlib.use('agg')
 
 import nose, warnings
 with warnings.catch_warnings():