diff --git a/install_and_cache_pkgs.sh b/install_and_cache_pkgs.sh
index 20ebcd2..64e5a42 100755
--- a/install_and_cache_pkgs.sh
+++ b/install_and_cache_pkgs.sh
@@ -75,7 +75,7 @@ for installed_package in ${installed_packages}; do
       while IFS= read -r f; do     
         if test -f $f || test -L $f; then echo "${f:1}"; fi;  #${f:1} removes the leading slash that Tar disallows
       done |
-      xargs tar -czf "${cache_filepath}" -C /
+      xargs tar -caf "${cache_filepath}" -C /
     log "  * Cached ${installed_package_name} to ${cache_filepath} (compressed size $(du -h "${cache_filepath}" | cut -f1))."
   fi
 
diff --git a/lib.sh b/lib.sh
index f9f88b9..9f80537 100755
--- a/lib.sh
+++ b/lib.sh
@@ -13,11 +13,11 @@ function normalize_package_list {
 #   <name>:<version> <name:version>...
 function get_installed_packages {   
   install_log_filepath="${1}"
-  local regex="^Unpacking ([^ :]+)([^ ]+)? (\[[^ ]+\]\s)?\(([^ )]+)"  
+  local regex="^Unpacking ([^ :]+)([^ ]+)? (\[[^ ]+\]\s)?\(([^ )]+)"
   dep_packages=""  
   while read -r line; do
     if [[ "${line}" =~ ${regex} ]]; then
-      dep_packages="${dep_packages}${BASH_REMATCH[1]}:${BASH_REMATCH[4]} "      
+      dep_packages="${dep_packages}${BASH_REMATCH[1]}:${BASH_REMATCH[4]} "
     else
       log_err "Unable to parse package name and version from \"${line}\""
       exit 2