diff --git a/mkdocs/config.py b/mkdocs/config.py
index a9cf05c7..f1bff23e 100644
--- a/mkdocs/config.py
+++ b/mkdocs/config.py
@@ -2,6 +2,8 @@
 
 from mkdocs import utils
 from mkdocs.compat import urlparse
+from mkdocs.exceptions import ConfigurationError
+
 import errno
 import os
 import sys
diff --git a/mkdocs/exceptions.py b/mkdocs/exceptions.py
new file mode 100644
index 00000000..859d1f79
--- /dev/null
+++ b/mkdocs/exceptions.py
@@ -0,0 +1,3 @@
+class ConfigurationError(Exception):
+    """Error in configuration"""
+    pass