diff --git a/.gitignore b/.gitignore
index 50b84e4..16bb03e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -64,3 +64,8 @@ session/
 # System
 .DS_Store
 Thumbs.db
+
+# Editors
+.vscode/
+.idea/
+*.swp
diff --git a/README.md b/README.md
index 7c9f934..ccdc095 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # POS Cash Opening Adjustment
 
-**Version:** 17.0.1.0.0  
+**Version:** 17.0.1.1.0  
 **Author:** Suherdy Yacob  
 **Category:** Point of Sale  
 **License:** LGPL-3
@@ -12,6 +12,7 @@ Prevent opening cash journal entries and exclude opening float from closing tota
 - **Opening Cash Adjustment:** Modifies how opening cash is handled to prevent unwanted journal entries.
 - **Closing Totals:** Excludes opening float from closing totals calculation.
 - **Zero-Amount Payment Cleanup:** Automatically removes `pos.payment` lines with `0.00` amount during session verification. This prevents the creation of "Difference at closing PoS session" journal items triggered by empty payments (e.g. from 100% discount or external payment edge cases).
+- **Negative Cash Closing Adjustment:** Automatically overrides the cashier's input to match the expected closing balance if a negative difference is detected, logging the action in the chatter and preventing a loss journal entry.
 
 ## Technical Details
 ### Zero-Amount Payment Fix
diff --git a/__manifest__.py b/__manifest__.py
index 4274fe5..cfbc726 100755
--- a/__manifest__.py
+++ b/__manifest__.py
@@ -1,7 +1,7 @@
 {
     "name": "POS Cash Opening Adjustment",
     "summary": "Prevent opening cash journal entries and exclude opening float from closing totals while keeping reconciliation data.",
-    "version": "17.0.1.0.0",
+    "version": "17.0.1.1.0",
     "category": "Point of Sale",
     "author": "Suherdy Yacob",
     "depends": ["point_of_sale"],
diff --git a/__pycache__/__init__.cpython-310.pyc b/__pycache__/__init__.cpython-310.pyc
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diff --git a/models/__pycache__/pos_session.cpython-310.pyc b/models/__pycache__/pos_session.cpython-310.pyc
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diff --git a/models/pos_session.py b/models/pos_session.py
index ce74f67..e92519d 100755
--- a/models/pos_session.py
+++ b/models/pos_session.py
@@ -136,6 +136,18 @@ class PosSession(models.Model):
 
     def _validate_session(self, balancing_account=False, amount_to_balance=0, bank_payment_method_diffs=None):
         for session in self:
+            if session.config_id.cash_control:
+                difference = session.cash_register_balance_end_real - session.cash_register_balance_end
+                if session.currency_id.compare_amounts(difference, 0.0) < 0:
+                    session.message_post(body="Auto-adjustment: Cashier input %s overridden to expected %s to suppress negative difference of %s." % (
+                        session.currency_id.format(session.cash_register_balance_end_real),
+                        session.currency_id.format(session.cash_register_balance_end),
+                        session.currency_id.format(difference)
+                    ))
+                    session.write({'cash_register_balance_end_real': session.cash_register_balance_end})
+                    if amount_to_balance:
+                        amount_to_balance -= difference
+
             for order in session.order_ids:
                 for payment in order.payment_ids:
                     if session.currency_id.is_zero(payment.amount):