diff --git a/src/ssl/ssl_io.c b/src/ssl/ssl_io.c
index ed88c89..5bad81b 100644
--- a/src/ssl/ssl_io.c
+++ b/src/ssl/ssl_io.c
@@ -121,13 +121,14 @@ run_until(br_sslio_context *ctx, unsigned target)
 
 			buf = br_ssl_engine_recvrec_buf(ctx->engine, &len);
 			rlen = ctx->low_read(ctx->read_context, buf, len);
-			if (rlen <= 0) {
-				// br_ssl_engine_fail(ctx->engine, BR_ERR_IO);
+			if (rlen <= 0)
+			{
+				if (rlen != -ERESTARTSYS && rlen != -EAGAIN && rlen != -EWOULDBLOCK)
+					br_ssl_engine_fail(ctx->engine, BR_ERR_IO);
 				return rlen;
 			}
-			if (rlen > 0) {
-				br_ssl_engine_recvrec_ack(ctx->engine, rlen);
-			}
+
+			br_ssl_engine_recvrec_ack(ctx->engine, rlen);
 			continue;
 		}