diff --git a/server/core/dcb.c b/server/core/dcb.c
index 95130299f..ae77707b9 100644
--- a/server/core/dcb.c
+++ b/server/core/dcb.c
@@ -1017,7 +1017,7 @@ int dcb_read_SSL(
 		if(n < b)
 		{
 		    gwbuf_rtrim(buffer,b - n);
-		    ss_dassert(gwbuf_length(buffer) == n);
+		    ss_dassert(GWBUF_LENGTH(buffer) == n);
 		    LOGIF(LD,(skygw_log_write(LD,"[%lu] SSL: Truncated buffer to correct size from %d to %d bytes.\n",
 		     b,gwbuf_length(buffer))));
 		}