diff --git a/homeassistant/components/input_datetime/__init__.py b/homeassistant/components/input_datetime/__init__.py
index 34faffd2028..af0a28aa34a 100644
--- a/homeassistant/components/input_datetime/__init__.py
+++ b/homeassistant/components/input_datetime/__init__.py
@@ -20,6 +20,8 @@ CONF_HAS_DATE = 'has_date'
 CONF_HAS_TIME = 'has_time'
 CONF_INITIAL = 'initial'
 
+DEFAULT_VALUE = '1970-01-01 00:00:00'
+
 ATTR_DATE = 'date'
 ATTR_TIME = 'time'
 
@@ -120,13 +122,18 @@ class InputDatetime(RestoreEntity):
             if old_state is not None:
                 restore_val = old_state.state
 
-        if restore_val is not None:
-            if not self.has_date:
-                self._current_datetime = dt_util.parse_time(restore_val)
-            elif not self.has_time:
-                self._current_datetime = dt_util.parse_date(restore_val)
-            else:
-                self._current_datetime = dt_util.parse_datetime(restore_val)
+        if not self.has_date:
+            if not restore_val:
+                restore_val = DEFAULT_VALUE.split()[1]
+            self._current_datetime = dt_util.parse_time(restore_val)
+        elif not self.has_time:
+            if not restore_val:
+                restore_val = DEFAULT_VALUE.split()[0]
+            self._current_datetime = dt_util.parse_date(restore_val)
+        else:
+            if not restore_val:
+                restore_val = DEFAULT_VALUE
+            self._current_datetime = dt_util.parse_datetime(restore_val)
 
     @property
     def should_poll(self):
diff --git a/tests/components/input_datetime/test_init.py b/tests/components/input_datetime/test_init.py
index 2a4d0fef09d..03ad27e6048 100644
--- a/tests/components/input_datetime/test_init.py
+++ b/tests/components/input_datetime/test_init.py
@@ -199,6 +199,39 @@ def test_restore_state(hass):
     assert state_bogus.state == str(initial)
 
 
+@asyncio.coroutine
+def test_default_value(hass):
+    """Test default value if none has been set via inital or restore state."""
+    yield from async_setup_component(hass, DOMAIN, {
+        DOMAIN: {
+            'test_time': {
+                'has_time': True,
+                'has_date': False
+            },
+            'test_date': {
+                'has_time': False,
+                'has_date': True
+            },
+            'test_datetime': {
+                'has_time': True,
+                'has_date': True
+            },
+        }})
+
+    dt_obj = datetime.datetime(1970, 1, 1, 0, 0)
+    state_time = hass.states.get('input_datetime.test_time')
+    assert state_time.state == str(dt_obj.time())
+    assert state_time.attributes.get('timestamp') is not None
+
+    state_date = hass.states.get('input_datetime.test_date')
+    assert state_date.state == str(dt_obj.date())
+    assert state_date.attributes.get('timestamp') is not None
+
+    state_datetime = hass.states.get('input_datetime.test_datetime')
+    assert state_datetime.state == str(dt_obj)
+    assert state_datetime.attributes.get('timestamp') is not None
+
+
 async def test_input_datetime_context(hass, hass_admin_user):
     """Test that input_datetime context works."""
     assert await async_setup_component(hass, 'input_datetime', {