diff --git a/apps/wpm/services.py b/apps/wpm/services.py
index 52d75881..d64adab7 100644
--- a/apps/wpm/services.py
+++ b/apps/wpm/services.py
@@ -30,7 +30,7 @@ myLogger = logging.getLogger('log')
 
 def check_wpr_number(number: str):
     return (len(number) >= 5 and 
-            number[-4:].isdigit() and 
+            (number[-4:].isdigit() or number[-2] == "-" or number[-3] == "-") and 
             not any(char.islower() for char in number))
     
 def generate_new_batch(old_batch: str, mlog: Mlog):