diff --git a/crypto_kem/hqc-rmrs-128/clean/reed_muller.c b/crypto_kem/hqc-rmrs-128/clean/reed_muller.c
index 36e80ff6..c958fb48 100644
--- a/crypto_kem/hqc-rmrs-128/clean/reed_muller.c
+++ b/crypto_kem/hqc-rmrs-128/clean/reed_muller.c
@@ -16,7 +16,7 @@
 #define BIT0MASK(x) (-((x) & 1))
 
 
-static void encode(uint32_t *word, const uint8_t message);
+static void encode(uint32_t *word, uint8_t message);
 static void hadamard(uint16_t src[128], uint16_t dst[128]);
 static void expand_and_sum(uint16_t dest[128], const uint32_t src[4 * MULTIPLICITY]);
 static uint8_t find_peaks(const uint16_t transform[128]);
diff --git a/crypto_kem/hqc-rmrs-192/clean/reed_muller.c b/crypto_kem/hqc-rmrs-192/clean/reed_muller.c
index 5beb05e3..b2398315 100644
--- a/crypto_kem/hqc-rmrs-192/clean/reed_muller.c
+++ b/crypto_kem/hqc-rmrs-192/clean/reed_muller.c
@@ -16,7 +16,7 @@
 #define BIT0MASK(x) (-((x) & 1))
 
 
-static void encode(uint32_t *word, const uint8_t message);
+static void encode(uint32_t *word, uint8_t message);
 static void hadamard(uint16_t src[128], uint16_t dst[128]);
 static void expand_and_sum(uint16_t dest[128], const uint32_t src[4 * MULTIPLICITY]);
 static uint8_t find_peaks(const uint16_t transform[128]);
diff --git a/crypto_kem/hqc-rmrs-256/clean/reed_muller.c b/crypto_kem/hqc-rmrs-256/clean/reed_muller.c
index ab3b66fa..b7715ae2 100644
--- a/crypto_kem/hqc-rmrs-256/clean/reed_muller.c
+++ b/crypto_kem/hqc-rmrs-256/clean/reed_muller.c
@@ -16,7 +16,7 @@
 #define BIT0MASK(x) (-((x) & 1))
 
 
-static void encode(uint32_t *word, const uint8_t message);
+static void encode(uint32_t *word, uint8_t message);
 static void hadamard(uint16_t src[128], uint16_t dst[128]);
 static void expand_and_sum(uint16_t dest[128], const uint32_t src[4 * MULTIPLICITY]);
 static uint8_t find_peaks(const uint16_t transform[128]);