diff --git a/erpnext/accounts/general_ledger.py b/erpnext/accounts/general_ledger.py
index 03a06cc..0199e7d 100644
--- a/erpnext/accounts/general_ledger.py
+++ b/erpnext/accounts/general_ledger.py
@@ -65,6 +65,8 @@
 
 	# filter zero debit and credit entries
 	merged_gl_map = filter(lambda x: flt(x.debit, 9)!=0 or flt(x.credit, 9)!=0, merged_gl_map)
+	merged_gl_map = list(merged_gl_map)
+		
 	return merged_gl_map
 
 def check_if_in_list(gle, gl_map):