diff --git a/memory_profiler.py b/memory_profiler.py
index f0b52cd..de12396 100644
--- a/memory_profiler.py
+++ b/memory_profiler.py
@@ -144,7 +144,7 @@ def ps_util_tool():
                 return mem, time.time()
             else:
                 return mem
-        except psutil.AccessDenied:
+        except (psutil.NoSuchProcess, psutil.AccessDenied):
             pass
             # continue and try to get this from ps