diff --git a/lib.sh b/lib.sh
index 0a9c580..f3757c9 100755
--- a/lib.sh
+++ b/lib.sh
@@ -4,8 +4,9 @@
 function normalize_package_list {
   local stripped=$(echo "${1}" | sed 's/,//g')
   # Remove extraneous spaces at the middle, beginning, and end.
-  local trimmed="$(echo "${stripped}" | sed 's/\s\+/ /g; s/^\s\+//g; s/\s\+$//g')"  
-  echo "${trimmed}" | sort
+  local trimmed="$(echo "${stripped}" | sed 's/\s\+/ /g; s/^\s\+//g; s/\s\+$//g')"
+  local sorted="$(echo ${trimmed} | tr ' ' '\n' | sort | tr '\n' ' ')"
+  echo "${sorted}"  
 }
 
 # Split fully qualified package into name and version