diff --git a/force_bdss/core_mco_driver.py b/force_bdss/core_mco_driver.py
index 1407602c0bc7accc0df84feac8498d57f9207fde..f84c83dda83f6eeee1f7839608060d61551c952f 100644
--- a/force_bdss/core_mco_driver.py
+++ b/force_bdss/core_mco_driver.py
@@ -6,7 +6,7 @@ from traits.api import on_trait_change
 
 from force_bdss.base_core_driver import BaseCoreDriver
 from force_bdss.workspecs.workflow import (InvalidVersionException,
-                                           CorruptedInputFile)
+                                           InvalidFileException)
 
 
 class CoreMCODriver(BaseCoreDriver):
@@ -18,10 +18,7 @@ class CoreMCODriver(BaseCoreDriver):
     def application_started(self):
         try:
             workflow = self.application.workflow
-        except InvalidVersionException as e:
-            print(str(e), file=sys.stderr)
-            sys.exit(1)
-        except CorruptedInputFile as e:
+        except (InvalidVersionException, InvalidFileException) as e:
             print(str(e), file=sys.stderr)
             sys.exit(1)
 
diff --git a/force_bdss/workspecs/workflow.py b/force_bdss/workspecs/workflow.py
index e49a81e9b3e6209ffac7d26871ca63b74164fc54..edc85c80f6f1770b08a15ce3dba17aa9080d61e7 100644
--- a/force_bdss/workspecs/workflow.py
+++ b/force_bdss/workspecs/workflow.py
@@ -7,11 +7,11 @@ from .multi_criteria_optimizer import MultiCriteriaOptimizer
 SUPPORTED_FILE_VERSIONS = ["1"]
 
 
-class InvalidVersionException(Exception):
+class InvalidFileException(Exception):
     pass
 
 
-class CorruptedInputFile(Exception):
+class InvalidVersionException(InvalidFileException):
     pass
 
 
@@ -26,8 +26,8 @@ class Workflow(HasStrictTraits):
         try:
             version = json_data["version"]
         except KeyError:
-            raise CorruptedInputFile("Corrupted input file, no version"
-                                     " specified")
+            raise InvalidFileException("Corrupted input file, no version"
+                                       " specified")
 
         if version not in SUPPORTED_FILE_VERSIONS:
             raise InvalidVersionException(