diff --git a/voussoirkit/pathclass.py b/voussoirkit/pathclass.py
index f793d10..0bad1e3 100644
--- a/voussoirkit/pathclass.py
+++ b/voussoirkit/pathclass.py
@@ -11,6 +11,12 @@ class PathclassException(Exception):
 class Exists(PathclassException):
     pass
 
+class IsFile(PathclassException):
+    pass
+
+class IsDirectory(PathclassException):
+    pass
+
 class IsLink(PathclassException):
     pass
 
@@ -125,6 +131,14 @@ class Path:
         if self.exists:
             raise Exists(self)
 
+    def assert_not_file(self):
+        if self.is_file:
+            raise IsFile(self)
+
+    def assert_not_directory(self):
+        if self.is_dir:
+            raise IsDirectory(self)
+
     def assert_not_link(self):
         if self.is_link:
             raise IsLink(self)