diff --git a/cpu.sh b/cpu.sh
index 1c547d7..96bb48d 100755
--- a/cpu.sh
+++ b/cpu.sh
@@ -77,10 +77,12 @@ for VM in ${OUT}; do
 	fi
 done
 
-SEEN=$(ls -1 /tmp/vm* | awk -F'/' '{print $3}')
-for s in ${SEEN[@]}; do
-	if [[ "${OUT[*]}" != *"${s}"* ]]; then
-		if [ -n "${DEBUG}" ]; then echo "${s} - remove from tracking list"; fi
-		rm -rf /tmp/${s}
-	fi
-done
+if ls /tmp/vm* 1> /dev/null 2>&1; then
+	SEEN=$(ls -1 /tmp/vm* | awk -F'/' '{print $3}')
+	for s in ${SEEN[@]}; do
+		if [[ "${OUT[*]}" != *"${s}"* ]]; then
+			if [ -n "${DEBUG}" ]; then echo "${s} - remove from tracking list"; fi
+			rm -rf /tmp/${s}
+		fi
+	done
+fi