--- a/taskcluster/docker/recipes/ubuntu1604-test-system-setup.sh
+++ b/taskcluster/docker/recipes/ubuntu1604-test-system-setup.sh
@@ -138,16 +138,18 @@ mv linux64-minidump_stackwalk /usr/local
 chmod +x /usr/local/bin/linux64-minidump_stackwalk
 
 # adding multiverse to get 'ubuntu-restricted-extras' below
 apt-add-repository multiverse
 apt-get update
 
 # for mp4 codec (used in MSE tests)
 apt-get -q -y -f install ubuntu-restricted-extras
+# TEMPORARY: we do not want flash installed, but the above pulls it in (bug 1349208)
+rm -f /usr/lib/flashplugin-installer/libflashplayer.so
 
 apt-get -q -y -f install \
     libxcb1 \
     libxcb-render0 \
     libxcb-shm0 \
     libxcb-glx0 \
     libxcb-shape0