diff --git a/dotdrop/dotdrop.py b/dotdrop/dotdrop.py
index bf99e78..f7ba860 100644
--- a/dotdrop/dotdrop.py
+++ b/dotdrop/dotdrop.py
@@ -851,6 +851,9 @@ def _exec_command(opts):
             LOG.dbg('running cmd: {}'.format(command))
             cmd_remove(opts)
 
+    except UndefinedException as exc:
+        LOG.err(exc)
+        ret = False
     except KeyboardInterrupt:
         LOG.err('interrupted')
         ret = False
diff --git a/dotdrop/importer.py b/dotdrop/importer.py
index ecbe2df..528bd43 100644
--- a/dotdrop/importer.py
+++ b/dotdrop/importer.py
@@ -16,6 +16,7 @@ from dotdrop.utils import strip_home, get_default_file_perms, \
 from dotdrop.linktypes import LinkTypes
 from dotdrop.comparator import Comparator
 from dotdrop.templategen import Templategen
+from dotdrop.exceptions import UndefinedException
 
 
 class Importer:
@@ -35,8 +36,11 @@ class Importer:
         @debug: enable debug
         @keepdot: keep dot prefix
         @ignore: patterns to ignore when importing
+        This may raise UndefinedException
         """
         self.profile = profile
+        if not self.profile:
+            raise UndefinedException("profile is undefined")
         self.conf = conf
         self.dotpath = dotpath
         self.diff_cmd = diff_cmd