diff --git a/twiddle_factors_256_br.h b/twiddle_factors_256_br.h
index ed51825..bf48926 100644
--- a/twiddle_factors_256_br.h
+++ b/twiddle_factors_256_br.h
@@ -7,7 +7,7 @@
 #define __PROG_TYPES_COMPAT__
 #include <avr/pgmspace.h>
 
-const prog_int16_t twiddle_real[ 256 ] PROGMEM =
+const int16_t twiddle_real[ 256 ] PROGMEM =
 {
   0x7fff, 0x0000, 0x5a82, 0xa57e, 0x7641, 0xcf05, 0x30fb, 0x89bf, 
   0x7d8a, 0xe708, 0x471c, 0x9593, 0x6a6d, 0xb8e4, 0x18f8, 0x8276, 
@@ -43,7 +43,7 @@ const prog_int16_t twiddle_real[ 256 ] PROGMEM =
   0x76d9, 0xd079, 0x326e, 0x8a5b, 0x5b9d, 0xa69c, 0x0192, 0x8003
 };
 
-const prog_int16_t twiddle_imag[ 256 ] PROGMEM =
+const int16_t twiddle_imag[ 256 ] PROGMEM =
 {
   0x0000, 0x8000, 0xa57e, 0xa57e, 0xcf05, 0x89bf, 0x89bf, 0xcf05, 
   0xe708, 0x8276, 0x9593, 0xb8e4, 0xb8e4, 0x9593, 0x8276, 0xe708,