1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/s390/char/raw3270.h b/drivers/s390/char/raw3270.h
index b635bf8e7775..90beaa80a782 100644
--- a/drivers/s390/char/raw3270.h
+++ b/drivers/s390/char/raw3270.h
@@ -231,7 +231,7 @@ alloc_string(struct list_head *free_list, unsigned long len)
                 INIT_LIST_HEAD(&cs->update);
                 return cs;
         }
-        return 0;
+        return NULL;
 }
 
 static inline unsigned long