diff --git a/install/from-scratch.sh b/install/from-scratch.sh
index d0de80ea69caaf183542d44e05791378f75911de..181f9ff7db6746c05d772c9fdc22a98a1e296dff 100755
--- a/install/from-scratch.sh
+++ b/install/from-scratch.sh
@@ -24,6 +24,6 @@ if [ -d ${BASEDIR}/envs/${NAME} ]; then
 fi
 
 echo "[>>] Creating environment ${NAME} for python ${PYTHON_VERSION} with bob dependencies..."
-${CONDA} create --name=${NAME} --override-channels --channel=http://www.idiap.ch/software/bob/conda --channel=defaults python=${PYTHON_VERSION} bob-devel
+${CONDA} create --yes --name=${NAME} --override-channels --channel=http://www.idiap.ch/software/bob/conda --channel=defaults python=${PYTHON_VERSION} bob-devel
 echo "[>>] Bye!"
 exit 0