diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 26a4110..8a58820 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -231,7 +231,8 @@
 #define QETH_IN_BUF_COUNT_MAX 128
 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
-		((card)->qdio.in_buf_pool.buf_count / 2)
+		((card)->ssqd.qdioac1 & AC1_SIGA_INPUT_NEEDED ? 1 : \
+		 ((card)->qdio.in_buf_pool.buf_count / 2))
 
 /* buffers we have to be behind before we get a PCI */
 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)