diff --git a/crypto/asn1/a_d2i_fp.c b/crypto/asn1/a_d2i_fp.c
index e8602053f974f..833dc104ddcfc 100644
--- a/crypto/asn1/a_d2i_fp.c
+++ b/crypto/asn1/a_d2i_fp.c
@@ -148,6 +148,9 @@ int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb)
                     goto err;
                 }
                 len += i;
+                if ((size_t)i < want)
+                    continue;
+
             }
         }
         /* else data already loaded */