diff --git a/dev-python/ipython/ipython-3.2.1-r1.ebuild b/dev-python/ipython/ipython-3.2.1-r1.ebuild
index 6083e1c088923..a4db074de7ec5 100644
--- a/dev-python/ipython/ipython-3.2.1-r1.ebuild
+++ b/dev-python/ipython/ipython-3.2.1-r1.ebuild
@@ -5,7 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python2_7 python3_{3,4,5} )
-PYTHON_REQ_USE='readline,sqlite'
+PYTHON_REQ_USE='readline,sqlite,threads(+)'
 
 inherit distutils-r1 eutils virtualx