diff --git a/misc/install.func b/misc/install.func
index 239a4e0c8..6ec040a1c 100644
--- a/misc/install.func
+++ b/misc/install.func
@@ -128,7 +128,7 @@ update_os() {
   msg_info "Updating Container OS"
   if [[ "$CACHER" == "yes" ]]; then
     echo "Acquire::http::Proxy-Auto-Detect \"/usr/local/bin/apt-proxy-detect.sh\";" >/etc/apt/apt.conf.d/00aptproxy
-    cat <<EOF >/usr/local/bin/apt-proxy-detect.sh
+    cat <<'EOF' >/usr/local/bin/apt-proxy-detect.sh
 #!/bin/bash
 if nc -w1 -z "${CACHER_IP}" 3142; then
   echo -n "http://${CACHER_IP}:3142"