diff --git a/data_structures/stacks/stack.py b/data_structures/stacks/stack.py
index 66af8c025..7f979d927 100644
--- a/data_structures/stacks/stack.py
+++ b/data_structures/stacks/stack.py
@@ -17,7 +17,7 @@ class Stack(object):
         self.limit = limit
 
     def __bool__(self):
-        return not bool(self.stack)
+        return bool(self.stack)
 
     def __str__(self):
         return str(self.stack)