diff --git a/sstreasury/models.py b/sstreasury/models.py
index 02f2a01..f278dff 100644
--- a/sstreasury/models.py
+++ b/sstreasury/models.py
@@ -240,7 +240,7 @@ class ReimbursementClaim(models.Model):
 	def get_total(self):
 		total = Decimal(0)
 		for item in self.items:
-			total += Decimal(item['Unit price']) * item['Units']
+			total += Decimal(item['Unit price']) * Decimal(item['Units'])
 		return total
 	
 	def update_state(self, user, state):