diff --git a/src/headers/tomcrypt_cfg.h b/src/headers/tomcrypt_cfg.h
index 8b06b14..e17aa6a 100644
--- a/src/headers/tomcrypt_cfg.h
+++ b/src/headers/tomcrypt_cfg.h
@@ -56,7 +56,7 @@ LTC_EXPORT int   LTC_CALL XSTRCMP(const char *s1, const char *s2);
  */
 
 /* detect x86-32 machines somewhat */
-#if !defined(__STRICT_ANSI__) && (defined(INTEL_CC) || (defined(_MSC_VER) && defined(WIN32)) || (defined(__GNUC__) && (defined(__DJGPP__) || defined(__CYGWIN__) || defined(__MINGW32__) || defined(__i386__))))
+#if !defined(__STRICT_ANSI__) && !defined(_WIN64) && (defined(INTEL_CC) || (defined(_MSC_VER) && defined(WIN32)) || (defined(__GNUC__) && (defined(__DJGPP__) || defined(__CYGWIN__) || defined(__MINGW32__) || defined(__i386__))))
    #define ENDIAN_LITTLE
    #define ENDIAN_32BITWORD
    #define LTC_FAST
diff --git a/src/prngs/rng_get_bytes.c b/src/prngs/rng_get_bytes.c
index b36d1a9..5604838 100644
--- a/src/prngs/rng_get_bytes.c
+++ b/src/prngs/rng_get_bytes.c
@@ -138,7 +138,7 @@ unsigned long rng_get_bytes(unsigned char *out, unsigned long outlen,
 #if defined(LTC_DEVRANDOM)
    x = rng_nix(out, outlen, callback);   if (x != 0) { return x; }
 #endif
-#if defined(_WIN32) || defined(_WIN32) || defined(WINCE)
+#if defined(WIN32) || defined(_WIN32) || defined(WINCE)
    x = rng_win32(out, outlen, callback); if (x != 0) { return x; }
 #endif
 #ifdef ANSI_RNG