diff --git a/coredump/coredump.py b/coredump/coredump.py
index 5e63d2138..88a1b374c 100644
--- a/coredump/coredump.py
+++ b/coredump/coredump.py
@@ -1,5 +1,6 @@
 import argparse
 import os
+import sys
 
 import criu_coredump
 
@@ -34,7 +35,12 @@ def main():
 
     opts = vars(parser.parse_args())
 
-    coredump(opts)
+    try:
+        coredump(opts)
+    except SystemExit as error:
+        print('ERROR: %s' % error)
+        print('Exiting')
+        sys.exit(1)
 
 
 if __name__ == '__main__':
diff --git a/coredump/criu_coredump/coredump.py b/coredump/criu_coredump/coredump.py
index e2c56c01c..8ee402676 100644
--- a/coredump/criu_coredump/coredump.py
+++ b/coredump/criu_coredump/coredump.py
@@ -692,7 +692,11 @@ class coredump_generator:
             files = self.reg_files
             fname = next(filter(lambda x: x["id"] == shmid, files))["name"]
 
-            f = open(fname, 'rb')
+            try:
+                f = open(fname, 'rb')
+            except FileNotFoundError:
+                sys.exit('Required file %s not found.' % fname)
+
             f.seek(off)
 
         start = vma["start"]