diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 50a6e1a..389bc6f 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -47,7 +47,7 @@
 	mempool_t	*pool;
 };
 
-#define SP(x) { x, "sgpool-" __stringify(x) }
+#define SP(x) { .size = x, "sgpool-" __stringify(x) }
 #if (SCSI_MAX_SG_SEGMENTS < 32)
 #error SCSI_MAX_SG_SEGMENTS is too small (must be 32 or greater)
 #endif