diff --git a/conf/ros-distro/include/ubuntu-bionic/ros-distro-platform-preferred-versions.inc b/conf/ros-distro/include/ubuntu-bionic/ros-distro-platform-preferred-versions.inc
index bb48eef..ada9b7c 100644
--- a/conf/ros-distro/include/ubuntu-bionic/ros-distro-platform-preferred-versions.inc
+++ b/conf/ros-distro/include/ubuntu-bionic/ros-distro-platform-preferred-versions.inc
@@ -8,5 +8,6 @@ PREFERRED_VERSION_cppunit ?= "1.14.0"
 PREFERRED_VERSION_linux-raspberrypi ?= "4.4%"
 # Match kernel version of raspberrypi.
 PREFERRED_VERSION_linux-yocto ?= "4.4%"
+PREFERRED_VERSION_opencv ?= "3.2%"
 PREFERRED_VERSION_python-matplotlib ?= "2.1.1"
 PREFERRED_VERSION_yajl ?= "2.1.0"