diff --git a/crypto/bio/bio_cb.c b/crypto/bio/bio_cb.c
index 360737564..dcb428b35 100644
--- a/crypto/bio/bio_cb.c
+++ b/crypto/bio/bio_cb.c
@@ -70,14 +70,17 @@ long BIO_debug_callback(BIO *bio, int cmd, const char *argp,
     char buf[256];
     char *p;
     long r = 1;
+    int len;
     size_t p_maxlen;
 
     if (BIO_CB_RETURN & cmd)
         r = ret;
 
-    BIO_snprintf(buf, sizeof buf, "BIO[%08lX]:", (unsigned long)bio);
-    p = &(buf[14]);
-    p_maxlen = sizeof buf - 14;
+    len = BIO_snprintf(buf,sizeof buf,"BIO[%p]: ",(void *)bio);
+
+    p = buf + len;
+    p_maxlen = sizeof(buf) - len;
+
     switch (cmd) {
     case BIO_CB_FREE:
         BIO_snprintf(p, p_maxlen, "Free - %s\n", bio->method->name);