diff --git a/modules/commission/commission_reporting.py b/modules/commission/commission_reporting.py
index 3aeec2d2d6..b4d6fadb18 100644
--- a/modules/commission/commission_reporting.py
+++ b/modules/commission/commission_reporting.py
@@ -23,7 +23,7 @@ from trytond.transaction import Transaction
 
 def pairwise(iterable):
     a, b = tee(iterable)
-    next(b)
+    next(b, None)
     return zip_longest(a, b)
 
 
diff --git a/modules/purchase/purchase_reporting.py b/modules/purchase/purchase_reporting.py
index faf5bf3ac0..f6e14acf77 100644
--- a/modules/purchase/purchase_reporting.py
+++ b/modules/purchase/purchase_reporting.py
@@ -22,7 +22,7 @@ from trytond.transaction import Transaction
 
 def pairwise(iterable):
     a, b = tee(iterable)
-    next(b)
+    next(b, None)
     return zip_longest(a, b)
 
 
diff --git a/modules/sale/sale_reporting.py b/modules/sale/sale_reporting.py
index 703ce480e5..c5e0d45946 100644
--- a/modules/sale/sale_reporting.py
+++ b/modules/sale/sale_reporting.py
@@ -27,7 +27,7 @@ from trytond.wizard import StateAction, StateTransition, Wizard
 
 def pairwise(iterable):
     a, b = tee(iterable)
-    next(b)
+    next(b, None)
     return zip_longest(a, b)
 
 
diff --git a/modules/sale_opportunity/opportunity_reporting.py b/modules/sale_opportunity/opportunity_reporting.py
index 273602374c..e04cd8e573 100644
--- a/modules/sale_opportunity/opportunity_reporting.py
+++ b/modules/sale_opportunity/opportunity_reporting.py
@@ -24,7 +24,7 @@ from trytond.transaction import Transaction
 
 def pairwise(iterable):
     a, b = tee(iterable)
-    next(b)
+    next(b, None)
     return zip_longest(a, b)
 
 
diff --git a/modules/stock/stock_reporting_margin.py b/modules/stock/stock_reporting_margin.py
index 3031c0e81d..1769556794 100644
--- a/modules/stock/stock_reporting_margin.py
+++ b/modules/stock/stock_reporting_margin.py
@@ -27,7 +27,7 @@ from trytond.transaction import Transaction
 
 def pairwise(iterable):
     a, b = tee(iterable)
-    next(b)
+    next(b, None)
     return zip_longest(a, b)