diff --git a/include/net/gue.h b/include/net/gue.h
index dfca298bec9c..caefd6da8693 100644
--- a/include/net/gue.h
+++ b/include/net/gue.h
@@ -80,7 +80,7 @@ static inline size_t guehdr_flags_len(__be16 flags)
 
 static inline size_t guehdr_priv_flags_len(__be32 flags)
 {
-	return 0;
+	return (flags & GUE_PFLAG_REMCSUM) ? GUE_PLEN_REMCSUM : 0;
 }
 
 /* Validate standard and private flags. Returns non-zero (meaning invalid)