diff --git a/testprof/cipher_hash_test.c b/testprof/cipher_hash_test.c
index 6dd04daec..9925c70b6 100644
--- a/testprof/cipher_hash_test.c
+++ b/testprof/cipher_hash_test.c
@@ -4,7 +4,7 @@
 
 int cipher_hash_test(void)
 {
-   int           x;
+   int           x, fails = 0;
    unsigned char buf[4096];
    unsigned long n;
    prng_state    nprng;
@@ -21,21 +21,39 @@ int cipher_hash_test(void)
 
    /* test prngs (test, import/export */
    for (x = 0; prng_descriptor[x].name != NULL; x++) {
+      unsigned char buf1[100], buf2[100];
+
       DOX(prng_descriptor[x].test(), prng_descriptor[x].name);
       DOX(prng_descriptor[x].start(&nprng), prng_descriptor[x].name);
       DOX(prng_descriptor[x].add_entropy((unsigned char *)"helloworld12", 12, &nprng), prng_descriptor[x].name);
       DOX(prng_descriptor[x].ready(&nprng), prng_descriptor[x].name);
       n = sizeof(buf);
       DOX(prng_descriptor[x].pexport(buf, &n, &nprng), prng_descriptor[x].name);
+      if (prng_descriptor[x].read(buf1, 100, &nprng) != 100) exit(EXIT_FAILURE); /* skip 100 bytes */
+      if (prng_descriptor[x].read(buf1, 10, &nprng) != 10) exit(EXIT_FAILURE);   /* 10 bytes for comparison */
       prng_descriptor[x].done(&nprng);
+
       DOX(prng_descriptor[x].pimport(buf, n, &nprng), prng_descriptor[x].name);
-      DOX(prng_descriptor[x].ready(&nprng), prng_descriptor[x].name);
-      if (prng_descriptor[x].read(buf, 100, &nprng) != 100) {
-         fprintf(stderr, "Error reading from imported PRNG!\n");
-         exit(EXIT_FAILURE);
-      }
+      /*DOX(prng_descriptor[x].ready(&nprng), prng_descriptor[x].name);*/ /* it fails both with/without this line */
+      if (prng_descriptor[x].read(buf2, 100, &nprng) != 100) exit(EXIT_FAILURE); /* skip 100 bytes */
+      if (prng_descriptor[x].read(buf2, 10, &nprng) != 10) exit(EXIT_FAILURE);   /* 10 bytes for comparison */
       prng_descriptor[x].done(&nprng);
+
+      if (XMEMCMP(buf1, buf2, 10) != 0) {
+         int i;
+         fprintf(stderr, "%s export/import FAILED\n", prng_descriptor[x].name);
+         fprintf(stderr, "%s buf1: ", prng_descriptor[x].name);
+         for(i = 1; i < 10; i++) fprintf(stderr, "%02x ", buf1[i]);
+         fprintf(stderr, "\n%s buf2: ", prng_descriptor[x].name);
+         for(i = 1; i < 10; i++) fprintf(stderr, "%02x ", buf2[i]);
+         fprintf(stderr, "\n");
+         fails++;
+      }
+      else {
+         fprintf(stderr, "%s export/import OK\n", prng_descriptor[x].name);
+      }
    }
+   if (fails > 0) return CRYPT_FAIL_TESTVECTOR;
 
    return 0;
 }