diff --git a/pool.sh b/pool.sh
index 6f3262f..b18f545 100755
--- a/pool.sh
+++ b/pool.sh
@@ -27,6 +27,7 @@ write_status() {
     echo "nproc=${nproc}" >> "$POOL_STATUS"
     echo "procs=\"${procs}\"" >> "$POOL_STATUS"
     echo "lastprocid=$lastprocid" >> "$POOL_STATUS"
+    echo "createdat=$createdat" >> "$POOL_STATUS"
 }
 
 create_properties() {
@@ -58,6 +59,7 @@ create() {
     nproc=0
     procs=""
     lastprocid=0
+    createdat=$(date +"%s")
     write_status
 }
 
@@ -109,7 +111,7 @@ cat_output() {
 }
 
 list_pool() {
-    find "${TMPDIR}" -name "${POOL_FORMAT}*" -exec basename {} \; 2>/dev/null | sed "s/${POOL_FORMAT}//g"
+    find "${TMPDIR}" -maxdepth 1 -name "${POOL_FORMAT}*" -type d -exec basename {} \; 2>/dev/null | sed "s/${POOL_FORMAT}//g"
 }
 
 wait_pool() {
@@ -190,7 +192,6 @@ case "$CMD" in
         list_output
         ;;
     "ls")
-        check_pool
         list_pool
         ;;
     "wait")