diff --git a/erpnext/controllers/buying_controller.py b/erpnext/controllers/buying_controller.py
index 5659ad0..48fe7cb 100644
--- a/erpnext/controllers/buying_controller.py
+++ b/erpnext/controllers/buying_controller.py
@@ -194,16 +194,16 @@
 
 		if self.meta.get_field("base_in_words"):
 			if self.meta.get_field("base_rounded_total") and not self.is_rounded_total_disabled():
-				amount = self.base_rounded_total
+				amount = abs(self.base_rounded_total)
 			else:
-				amount = self.base_grand_total
+				amount = abs(self.base_grand_total)
 			self.base_in_words = money_in_words(amount, self.company_currency)
 
 		if self.meta.get_field("in_words"):
 			if self.meta.get_field("rounded_total") and not self.is_rounded_total_disabled():
-				amount = self.rounded_total
+				amount = abs(self.rounded_total)
 			else:
-				amount = self.grand_total
+				amount = abs(self.grand_total)
 
 			self.in_words = money_in_words(amount, self.currency)