diff --git a/src/libFLAC/crc.c b/src/libFLAC/crc.c
index cfb8adca..6623f1ef 100644
--- a/src/libFLAC/crc.c
+++ b/src/libFLAC/crc.c
@@ -74,7 +74,7 @@ FLAC__byte const FLAC__crc8_table[256] = {
 
 /* CRC-16, poly = x^16 + x^15 + x^2 + x^0, init = 0 */
 
-unsigned FLAC__crc16_table[256] = {
+unsigned const FLAC__crc16_table[256] = {
 	0x0000,  0x8005,  0x800f,  0x000a,  0x801b,  0x001e,  0x0014,  0x8011,
 	0x8033,  0x0036,  0x003c,  0x8039,  0x0028,  0x802d,  0x8027,  0x0022,
 	0x8063,  0x0066,  0x006c,  0x8069,  0x0078,  0x807d,  0x8077,  0x0072,
diff --git a/src/libFLAC/include/private/crc.h b/src/libFLAC/include/private/crc.h
index 4ba0dc2a..eb976337 100644
--- a/src/libFLAC/include/private/crc.h
+++ b/src/libFLAC/include/private/crc.h
@@ -48,7 +48,7 @@ FLAC__uint8 FLAC__crc8(const FLAC__byte *data, unsigned len);
 ** polynomial = x^16 + x^15 + x^2 + x^0
 ** init = 0
 */
-extern unsigned FLAC__crc16_table[256];
+extern unsigned const FLAC__crc16_table[256];
 
 #define FLAC__CRC16_UPDATE(data, crc) (((((crc)<<8) & 0xffff) ^ FLAC__crc16_table[((crc)>>8) ^ (data)]))
 /* this alternate may be faster on some systems/compilers */