diff --git a/salt/common/tools/sbin/so-sensor-clean b/salt/common/tools/sbin/so-sensor-clean
index 3b871ad80..22a0ae22b 100755
--- a/salt/common/tools/sbin/so-sensor-clean
+++ b/salt/common/tools/sbin/so-sensor-clean
@@ -115,8 +115,8 @@ clean() {
 }
 
 # Check to see if we are already running
-IS_RUNNING=$(ps aux | pgrep -f "so-sensor-clean" | wc -l)
-[ "$IS_RUNNING" -gt 3 ] && echo "$(date) - $IS_RUNNING sensor clean script processes running...exiting." >>$LOG && exit 0
+NUM_RUNNING=$(pgrep -cf "so-sensor-clean")
+[ "$NUM_RUNNING" -gt 1 ] && echo "$(date) - $NUM_RUNNING sensor clean script processes running...exiting." >>$LOG && exit 0
 
 if [ "$CUR_USAGE" -gt "$CRIT_DISK_USAGE" ]; then
 	while [ "$CUR_USAGE" -gt "$CRIT_DISK_USAGE" ]; do