diff --git a/build_linux_for_tegra_userspace.sh b/build_linux_for_tegra_userspace.sh
index d7a2ed2..7b46661 100755
--- a/build_linux_for_tegra_userspace.sh
+++ b/build_linux_for_tegra_userspace.sh
@@ -129,7 +129,7 @@ echo "Downloading NVIDIA Linux for Tegra (L4T) 21.8 userspace software and drive
 echo -e "\n"
 
 if [ -z "$LINUX_FOR_TEGRA_URL" ]; then
-    LINUX_FOR_TEGRA_URL=https://developer.download.nvidia.com/embedded/L4T/r21_Release_v8.0/release_files/Tegra124_Linux_R21.8.0_armhf.tbz2
+    LINUX_FOR_TEGRA_URL="https://developer.download.nvidia.com/embedded/L4T/r21_Release_v8.0/release_files/Tegra124_Linux_R21.8.0_armhf.tbz2"
     LINUX_FOR_TEGRA_ARCHIVE_FILE="$(basename "$LINUX_FOR_TEGRA_URL")"
 fi