diff --git a/crypto_kem/frodokem1344aes/clean/noise.c b/crypto_kem/frodokem1344aes/clean/noise.c
index 9205c905..535e2f3f 100644
--- a/crypto_kem/frodokem1344aes/clean/noise.c
+++ b/crypto_kem/frodokem1344aes/clean/noise.c
@@ -10,7 +10,7 @@
 #include "common.h"
 #include "params.h"
 
-static uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
+static const uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
 
 void PQCLEAN_FRODOKEM1344AES_CLEAN_sample_n(uint16_t *s, size_t n) {
     // Fills vector s with n samples from the noise distribution which requires 16 bits to sample.
diff --git a/crypto_kem/frodokem1344aes/opt/noise.c b/crypto_kem/frodokem1344aes/opt/noise.c
index 1e8b66c6..8e8720ad 100644
--- a/crypto_kem/frodokem1344aes/opt/noise.c
+++ b/crypto_kem/frodokem1344aes/opt/noise.c
@@ -10,7 +10,7 @@
 #include "common.h"
 #include "params.h"
 
-static uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
+static const uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
 
 void PQCLEAN_FRODOKEM1344AES_OPT_sample_n(uint16_t *s, size_t n) {
     // Fills vector s with n samples from the noise distribution which requires 16 bits to sample.
diff --git a/crypto_kem/frodokem1344shake/clean/noise.c b/crypto_kem/frodokem1344shake/clean/noise.c
index 289d7aa3..7e68616f 100644
--- a/crypto_kem/frodokem1344shake/clean/noise.c
+++ b/crypto_kem/frodokem1344shake/clean/noise.c
@@ -10,7 +10,7 @@
 #include "common.h"
 #include "params.h"
 
-static uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
+static const uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
 
 void PQCLEAN_FRODOKEM1344SHAKE_CLEAN_sample_n(uint16_t *s, size_t n) {
     // Fills vector s with n samples from the noise distribution which requires 16 bits to sample.
diff --git a/crypto_kem/frodokem1344shake/opt/noise.c b/crypto_kem/frodokem1344shake/opt/noise.c
index b64fe022..fbd5a6b9 100644
--- a/crypto_kem/frodokem1344shake/opt/noise.c
+++ b/crypto_kem/frodokem1344shake/opt/noise.c
@@ -10,7 +10,7 @@
 #include "common.h"
 #include "params.h"
 
-static uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
+static const uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
 
 void PQCLEAN_FRODOKEM1344SHAKE_OPT_sample_n(uint16_t *s, size_t n) {
     // Fills vector s with n samples from the noise distribution which requires 16 bits to sample.
diff --git a/crypto_kem/frodokem640aes/clean/noise.c b/crypto_kem/frodokem640aes/clean/noise.c
index 44cd51be..1dc752a7 100644
--- a/crypto_kem/frodokem640aes/clean/noise.c
+++ b/crypto_kem/frodokem640aes/clean/noise.c
@@ -10,7 +10,7 @@
 #include "common.h"
 #include "params.h"
 
-static uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
+static const uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
 
 void PQCLEAN_FRODOKEM640AES_CLEAN_sample_n(uint16_t *s, size_t n) {
     // Fills vector s with n samples from the noise distribution which requires 16 bits to sample.
diff --git a/crypto_kem/frodokem640aes/opt/noise.c b/crypto_kem/frodokem640aes/opt/noise.c
index 86ecf4d2..96bf9240 100644
--- a/crypto_kem/frodokem640aes/opt/noise.c
+++ b/crypto_kem/frodokem640aes/opt/noise.c
@@ -10,7 +10,7 @@
 #include "common.h"
 #include "params.h"
 
-static uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
+static const uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
 
 void PQCLEAN_FRODOKEM640AES_OPT_sample_n(uint16_t *s, size_t n) {
     // Fills vector s with n samples from the noise distribution which requires 16 bits to sample.
diff --git a/crypto_kem/frodokem640shake/clean/noise.c b/crypto_kem/frodokem640shake/clean/noise.c
index 32b6938d..9ca892e3 100644
--- a/crypto_kem/frodokem640shake/clean/noise.c
+++ b/crypto_kem/frodokem640shake/clean/noise.c
@@ -10,7 +10,7 @@
 #include "common.h"
 #include "params.h"
 
-static uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
+static const uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
 
 void PQCLEAN_FRODOKEM640SHAKE_CLEAN_sample_n(uint16_t *s, size_t n) {
     // Fills vector s with n samples from the noise distribution which requires 16 bits to sample.
diff --git a/crypto_kem/frodokem640shake/opt/noise.c b/crypto_kem/frodokem640shake/opt/noise.c
index 170a944b..3738b9a4 100644
--- a/crypto_kem/frodokem640shake/opt/noise.c
+++ b/crypto_kem/frodokem640shake/opt/noise.c
@@ -10,7 +10,7 @@
 #include "common.h"
 #include "params.h"
 
-static uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
+static const uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
 
 void PQCLEAN_FRODOKEM640SHAKE_OPT_sample_n(uint16_t *s, size_t n) {
     // Fills vector s with n samples from the noise distribution which requires 16 bits to sample.
diff --git a/crypto_kem/frodokem976aes/clean/noise.c b/crypto_kem/frodokem976aes/clean/noise.c
index 8796e4d4..dcd674cb 100644
--- a/crypto_kem/frodokem976aes/clean/noise.c
+++ b/crypto_kem/frodokem976aes/clean/noise.c
@@ -10,7 +10,7 @@
 #include "common.h"
 #include "params.h"
 
-static uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
+static const uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
 
 void PQCLEAN_FRODOKEM976AES_CLEAN_sample_n(uint16_t *s, size_t n) {
     // Fills vector s with n samples from the noise distribution which requires 16 bits to sample.
diff --git a/crypto_kem/frodokem976aes/opt/noise.c b/crypto_kem/frodokem976aes/opt/noise.c
index aa8aa1fd..f502b0c4 100644
--- a/crypto_kem/frodokem976aes/opt/noise.c
+++ b/crypto_kem/frodokem976aes/opt/noise.c
@@ -10,7 +10,7 @@
 #include "common.h"
 #include "params.h"
 
-static uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
+static const uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
 
 void PQCLEAN_FRODOKEM976AES_OPT_sample_n(uint16_t *s, size_t n) {
     // Fills vector s with n samples from the noise distribution which requires 16 bits to sample.
diff --git a/crypto_kem/frodokem976shake/clean/noise.c b/crypto_kem/frodokem976shake/clean/noise.c
index e23892c8..6223d7a8 100644
--- a/crypto_kem/frodokem976shake/clean/noise.c
+++ b/crypto_kem/frodokem976shake/clean/noise.c
@@ -10,7 +10,7 @@
 #include "common.h"
 #include "params.h"
 
-static uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
+static const uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
 
 void PQCLEAN_FRODOKEM976SHAKE_CLEAN_sample_n(uint16_t *s, size_t n) {
     // Fills vector s with n samples from the noise distribution which requires 16 bits to sample.
diff --git a/crypto_kem/frodokem976shake/opt/noise.c b/crypto_kem/frodokem976shake/opt/noise.c
index d75e1956..ed457d5a 100644
--- a/crypto_kem/frodokem976shake/opt/noise.c
+++ b/crypto_kem/frodokem976shake/opt/noise.c
@@ -10,7 +10,7 @@
 #include "common.h"
 #include "params.h"
 
-static uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
+static const uint16_t CDF_TABLE[CDF_TABLE_LEN] = CDF_TABLE_DATA;
 
 void PQCLEAN_FRODOKEM976SHAKE_OPT_sample_n(uint16_t *s, size_t n) {
     // Fills vector s with n samples from the noise distribution which requires 16 bits to sample.