diff --git a/test/x509aux.c b/test/x509aux.c
index 44a9db1..024bfc9 100644
--- a/test/x509aux.c
+++ b/test/x509aux.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL licenses, (the "License");
  * you may not use this file except in compliance with the License.
@@ -40,27 +40,27 @@
 
     for (count = 0;
          !err && PEM_read_bio(fp, &name, &header, &data, &len);
-	 ++count) {
+         ++count) {
         int trusted = strcmp(name, PEM_STRING_X509_TRUSTED) == 0;
         d2i_X509_t d2i = trusted ? d2i_X509_AUX : d2i_X509;
         i2d_X509_t i2d = trusted ? i2d_X509_AUX : i2d_X509;
         X509 *cert = NULL;
-	const unsigned char *p = data;
+        const unsigned char *p = data;
         unsigned char *buf = NULL;
         unsigned char *bufp;
         long enclen;
 
-	if (!trusted
+        if (!trusted
             && strcmp(name, PEM_STRING_X509) != 0
-	    && strcmp(name, PEM_STRING_X509_OLD) != 0) {
-	    fprintf(stderr, "unexpected PEM object: %s\n", name);
+            && strcmp(name, PEM_STRING_X509_OLD) != 0) {
+            TEST_error("unexpected PEM object: %s", name);
             err = 1;
-	    goto next;
+            goto next;
         }
         cert = d2i(NULL, &p, len);
 
         if (cert == NULL || (p - data) != len) {
-	    fprintf(stderr, "error parsing input %s\n", name);
+            TEST_error("error parsing input %s", name);
             err = 1;
             goto next;
         }
@@ -68,33 +68,31 @@
         /* Test traditional 2-pass encoding into caller allocated buffer */
         enclen = i2d(cert, NULL);
         if (len != enclen) {
-	    fprintf(stderr, "encoded length %ld of %s != input length %ld\n",
-                    enclen, name, len);
+            TEST_error("encoded length %ld of %s != input length %ld",
+                       enclen, name, len);
             err = 1;
             goto next;
         }
         if ((buf = bufp = OPENSSL_malloc(len)) == NULL) {
-            perror("malloc");
+            TEST_perror("malloc");
             err = 1;
             goto next;
         }
         enclen = i2d(cert, &bufp);
         if (len != enclen) {
-	    fprintf(stderr, "encoded length %ld of %s != input length %ld\n",
-                    enclen, name, len);
+            TEST_error("encoded length %ld of %s != input length %ld",
+                       enclen, name, len);
             err = 1;
             goto next;
         }
         enclen = (long) (bufp - buf);
         if (enclen != len) {
-	    fprintf(stderr, "unexpected buffer position after encoding %s\n",
-                    name);
+            TEST_error("unexpected buffer position after encoding %s", name);
             err = 1;
             goto next;
         }
         if (memcmp(buf, data, len) != 0) {
-	    fprintf(stderr, "encoded content of %s does not match input\n",
-                    name);
+            TEST_error("encoded content of %s does not match input", name);
             err = 1;
             goto next;
         }
@@ -104,14 +102,13 @@
         /* Test 1-pass encoding into library allocated buffer */
         enclen = i2d(cert, &buf);
         if (len != enclen) {
-	    fprintf(stderr, "encoded length %ld of %s != input length %ld\n",
-                    enclen, name, len);
+            TEST_error("encoded length %ld of %s != input length %ld",
+                       enclen, name, len);
             err = 1;
             goto next;
         }
         if (memcmp(buf, data, len) != 0) {
-	    fprintf(stderr, "encoded content of %s does not match input\n",
-                    name);
+            TEST_error("encoded content of %s does not match input", name);
             err = 1;
             goto next;
         }
@@ -124,27 +121,27 @@
             /* Test 1-pass encoding into library allocated buffer */
             enclen = i2d(cert, &buf);
             if (enclen > len) {
-                fprintf(stderr, "encoded length %ld of %s > input length %ld\n",
-                        enclen, name, len);
+                TEST_error("encoded length %ld of %s > input length %ld",
+                           enclen, name, len);
                 err = 1;
                 goto next;
             }
             if (memcmp(buf, data, enclen) != 0) {
-                fprintf(stderr, "encoded cert content does not match input\n");
+                TEST_error("encoded cert content does not match input");
                 err = 1;
                 goto next;
             }
         }
 
-	/*
-	 * If any of these were null, PEM_read() would have failed.
-	 */
+        /*
+         * If any of these were null, PEM_read() would have failed.
+         */
     next:
         X509_free(cert);
         OPENSSL_free(buf);
-	OPENSSL_free(name);
-	OPENSSL_free(header);
-	OPENSSL_free(data);
+        OPENSSL_free(name);
+        OPENSSL_free(header);
+        OPENSSL_free(data);
     }
     BIO_free(fp);