diff --git a/src/prngs/rng_get_bytes.c b/src/prngs/rng_get_bytes.c
index becb5bd..457c26f 100644
--- a/src/prngs/rng_get_bytes.c
+++ b/src/prngs/rng_get_bytes.c
@@ -21,14 +21,15 @@
 static unsigned long rng_nix(unsigned char *buf, unsigned long len,
                              void (*callback)(void))
 {
-    LTC_UNUSED_PARAM(callback);
 #ifdef LTC_NO_FILE
+    LTC_UNUSED_PARAM(callback);
     LTC_UNUSED_PARAM(buf);
     LTC_UNUSED_PARAM(len);
     return 0;
 #else
     FILE *f;
     unsigned long x;
+    LTC_UNUSED_PARAM(callback);
 #ifdef LTC_TRY_URANDOM_FIRST
     f = fopen("/dev/urandom", "rb");
     if (f == NULL)
@@ -107,8 +108,8 @@ static unsigned long rng_ansic(unsigned char *buf, unsigned long len,
 static unsigned long rng_win32(unsigned char *buf, unsigned long len,
                                void (*callback)(void))
 {
-   LTC_UNUSED_PARAM(callback);
    HCRYPTPROV hProv = 0;
+   LTC_UNUSED_PARAM(callback);
    if (!CryptAcquireContext(&hProv, NULL, MS_DEF_PROV, PROV_RSA_FULL,
                             (CRYPT_VERIFYCONTEXT | CRYPT_MACHINE_KEYSET)) &&
        !CryptAcquireContext (&hProv, NULL, MS_DEF_PROV, PROV_RSA_FULL,