diff --git a/homeassistant/bootstrap.py b/homeassistant/bootstrap.py
index a4b6550ee84..6b68f46d4ca 100644
--- a/homeassistant/bootstrap.py
+++ b/homeassistant/bootstrap.py
@@ -14,6 +14,7 @@ import homeassistant.components as core_components
 import homeassistant.components.group as group
 import homeassistant.config as config_util
 import homeassistant.core as core
+import homeassistant.helpers.config_validation as cv
 import homeassistant.loader as loader
 import homeassistant.util.dt as date_util
 import homeassistant.util.location as loc_util
@@ -103,7 +104,7 @@ def _setup_component(hass, domain, config):
             try:
                 config = component.CONFIG_SCHEMA(config)
             except vol.MultipleInvalid as ex:
-                _LOGGER.error('Invalid config for [%s]: %s', domain, ex)
+                cv.log_exception(_LOGGER, ex, domain)
                 return False
 
         elif hasattr(component, 'PLATFORM_SCHEMA'):
@@ -113,8 +114,7 @@ def _setup_component(hass, domain, config):
                 try:
                     p_validated = component.PLATFORM_SCHEMA(p_config)
                 except vol.MultipleInvalid as ex:
-                    _LOGGER.error('Invalid platform config for [%s]: %s. %s',
-                                  domain, ex, p_config)
+                    cv.log_exception(_LOGGER, ex, domain)
                     return False
 
                 # Not all platform components follow same pattern for platforms
@@ -135,9 +135,8 @@ def _setup_component(hass, domain, config):
                     try:
                         p_validated = platform.PLATFORM_SCHEMA(p_validated)
                     except vol.MultipleInvalid as ex:
-                        _LOGGER.error(
-                            'Invalid platform config for [%s.%s]: %s. %s',
-                            domain, p_name, ex, p_config)
+                        cv.log_exception(_LOGGER, ex, '{}.{}'
+                                         .format(domain, p_name))
                         return False
 
                 platforms.append(p_validated)
@@ -233,7 +232,7 @@ def from_config_dict(config, hass=None, config_dir=None, enable_log=True,
         process_ha_core_config(hass, config_util.CORE_CONFIG_SCHEMA(
             config.get(core.DOMAIN, {})))
     except vol.MultipleInvalid as ex:
-        _LOGGER.error('Invalid config for [homeassistant]: %s', ex)
+        cv.log_exception(_LOGGER, ex, 'homeassistant')
         return None
 
     process_ha_config_upgrade(hass)
diff --git a/homeassistant/helpers/config_validation.py b/homeassistant/helpers/config_validation.py
index 0c79949cdbd..0bab2674ca6 100644
--- a/homeassistant/helpers/config_validation.py
+++ b/homeassistant/helpers/config_validation.py
@@ -146,6 +146,18 @@ def time_period_str(value):
 time_period = vol.Any(time_period_str, timedelta, time_period_dict)
 
 
+def log_exception(logger, ex, domain):
+    """Generate log exception for config validation."""
+    message = 'Invalid config for [{}]: '.format(domain)
+    if 'extra keys not allowed' in ex.error_message:
+        message += '[{}] is an invalid option for [{}]. Check: {}->{}.'\
+                   .format(ex.path[-1], domain, domain,
+                           '->'.join('%s' % m for m in ex.path))
+    else:
+        message += ex.error_message
+    logger.error(message)
+
+
 def match_all(value):
     """Validator that matches all values."""
     return value