diff --git a/docs/docsite/keyword_desc.yml b/docs/docsite/keyword_desc.yml
index 2f6c066e38..73049118d6 100644
--- a/docs/docsite/keyword_desc.yml
+++ b/docs/docsite/keyword_desc.yml
@@ -71,5 +71,4 @@ until: "This keyword implies a ':term:`retries` loop' that will go on until the
 vars: Dictionary/map of variables
 vars_files: List of files that contain vars to include in the play.
 vars_prompt: list of variables to prompt for.
-vault_password: Secret used to decrypt vaulted files or variables.
 when: Conditional expression, determines if an iteration of a task is run or not.
diff --git a/lib/ansible/playbook/play.py b/lib/ansible/playbook/play.py
index 8933a21fd7..1d1371bf3d 100644
--- a/lib/ansible/playbook/play.py
+++ b/lib/ansible/playbook/play.py
@@ -65,7 +65,6 @@ class Play(Base, Taggable, Become):
     # Variable Attributes
     _vars_files = FieldAttribute(isa='list', default=[], priority=99)
     _vars_prompt = FieldAttribute(isa='list', default=[], always_post_validate=True)
-    _vault_password = FieldAttribute(isa='string', always_post_validate=True)
 
     # Role Attributes
     _roles = FieldAttribute(isa='list', default=[], priority=90)