diff --git a/topstat.py b/topstat.py
index 95efc12..64f7aff 100644
--- a/topstat.py
+++ b/topstat.py
@@ -105,8 +105,16 @@ def runtopstat():
 
         total_processes = processes[0]
         running = processes[1]
-        sleeping = processes[2]
-        zombie = processes[3]
+
+        try:
+            sleeping = processes[2]
+        except IndexError:
+            print("no sleeping processes")
+
+        try:
+            sleeping = processes[3]
+        except IndexError:
+            print("no zombie processes")
 
         cpu = re.search("CPU:.*", output).group()
         cpu = re.sub("CPU.", "", cpu.strip())