diff --git a/scripts/install-docker b/scripts/install-docker
index bba1a84..4f3cf11 100755
--- a/scripts/install-docker
+++ b/scripts/install-docker
@@ -19,7 +19,7 @@ curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add -
 echo "deb [arch=amd64] https://download.docker.com/linux/debian stretch stable" >> /etc/apt/sources.list.d/docker.list
 apt-get update
 
-PACKAGE_VERSION=$(apt-cache policy docker-ce | awk -v dv=${DOCKER_VERSION} '$1 ~ dv {print $1}')
+PACKAGE_VERSION=$(apt-cache policy docker-ce | awk -v dv=${DOCKER_VERSION}~ '$1 ~ dv {print $1}')
 
 apt-get install -y docker-ce=${PACKAGE_VERSION} docker-ce-cli=${PACKAGE_VERSION}
 apt-get -yq autoremove