diff --git a/install.sh b/install.sh
index 5cfdf50..2d5f90b 100755
--- a/install.sh
+++ b/install.sh
@@ -338,29 +338,20 @@ do_download () {
 
     if [[ -z "${wget_rc}" ]]; then
         echo "Downloading ${url}..."
-        local header
-        if [[ -n "${RS_USER_AGENT}" ]]; then
-          header="--header='User-Agent: ${RS_USER_AGENT}'"
-        fi
 
         if [[ "${RUN_UNATTENDED}" -ne "0" ]]; then
-          wget -q "${header[@]}" "${url}"
+          wget -q --header "User-Agent: ${RS_USER_AGENT:-r-builds}" "${url}"
         else
-          wget --progress=bar "${header[@]}" "${url}"
+          wget --progress=bar --header "User-Agent: ${RS_USER_AGENT:-r-builds}" "${url}"
         fi
         rc=$?
     # Or, If curl is around, use that.
     elif [[ -z "${curl_rc}" ]]; then
         echo "Downloading ${url}..."
-        local header
-        if [[ -n "${RS_USER_AGENT}" ]]; then
-          header="-H 'User-Agent: ${RS_USER_AGENT}'"
-        fi
-
         if [[ "${RUN_UNATTENDED}" -ne "0" ]]; then
-          curl -fsSL "${header[@]}" --output "${file_name}" "${url}"
+          curl -fsSL -H "User-Agent: ${RS_USER_AGENT:-r-builds}" --output "${file_name}" "${url}"
         else
-          curl -fL "${header[@]}" --output "${file_name}" --progress-bar "${url}"
+          curl -fL -H "User-Agent: ${RS_USER_AGENT:-r-builds}" --output "${file_name}" --progress-bar "${url}"
         fi
         rc=$?
     # Otherwise, we can't go on.