diff --git a/crypto_kem/kyber768/clean/cbd.c b/crypto_kem/kyber768/clean/cbd.c
index f62278e0..15b46021 100644
--- a/crypto_kem/kyber768/clean/cbd.c
+++ b/crypto_kem/kyber768/clean/cbd.c
@@ -32,32 +32,6 @@ static uint64_t load_littleendian(const unsigned char *x, int bytes) {
  *              - const unsigned char *buf: pointer to input byte array
  **************************************************/
 void PQCLEAN_KYBER768_CLEAN_cbd(poly *r, const unsigned char *buf) {
-    #if KYBER_ETA == 3
-    uint32_t t, d, a[4], b[4];
-    int i, j;
-
-    for (i = 0; i < KYBER_N / 4; i++) {
-        t = (uint32_t)load_littleendian(buf + 3 * i, 3);
-        d = 0;
-        for (j = 0; j < 3; j++) {
-            d += (t >> j) & 0x249249;
-        }
-
-        a[0] =  d        & 0x7;
-        b[0] = (d >>  3) & 0x7;
-        a[1] = (d >>  6) & 0x7;
-        b[1] = (d >>  9) & 0x7;
-        a[2] = (d >> 12) & 0x7;
-        b[2] = (d >> 15) & 0x7;
-        a[3] = (d >> 18) & 0x7;
-        b[3] = (d >> 21);
-
-        r->coeffs[4 * i + 0] = (uint16_t)(a[0] + KYBER_Q - b[0]);
-        r->coeffs[4 * i + 1] = (uint16_t)(a[1] + KYBER_Q - b[1]);
-        r->coeffs[4 * i + 2] = (uint16_t)(a[2] + KYBER_Q - b[2]);
-        r->coeffs[4 * i + 3] = (uint16_t)(a[3] + KYBER_Q - b[3]);
-    }
-    #elif KYBER_ETA == 4
     uint32_t t, d, a[4], b[4];
     int i, j;
 
@@ -82,32 +56,4 @@ void PQCLEAN_KYBER768_CLEAN_cbd(poly *r, const unsigned char *buf) {
         r->coeffs[4 * i + 2] = (uint16_t)(a[2] + KYBER_Q - b[2]);
         r->coeffs[4 * i + 3] = (uint16_t)(a[3] + KYBER_Q - b[3]);
     }
-    #elif KYBER_ETA == 5
-    uint64_t t, d, a[4], b[4];
-    int i, j;
-
-    for (i = 0; i < KYBER_N / 4; i++) {
-        t = load_littleendian(buf + 5 * i, 5);
-        d = 0;
-        for (j = 0; j < 5; j++) {
-            d += (t >> j) & 0x0842108421UL;
-        }
-
-        a[0] =  d        & 0x1f;
-        b[0] = (d >>  5) & 0x1f;
-        a[1] = (d >> 10) & 0x1f;
-        b[1] = (d >> 15) & 0x1f;
-        a[2] = (d >> 20) & 0x1f;
-        b[2] = (d >> 25) & 0x1f;
-        a[3] = (d >> 30) & 0x1f;
-        b[3] = (d >> 35);
-
-        r->coeffs[4 * i + 0] = (uint16_t)(a[0] + KYBER_Q - b[0]);
-        r->coeffs[4 * i + 1] = (uint16_t)(a[1] + KYBER_Q - b[1]);
-        r->coeffs[4 * i + 2] = (uint16_t)(a[2] + KYBER_Q - b[2]);
-        r->coeffs[4 * i + 3] = (uint16_t)(a[3] + KYBER_Q - b[3]);
-    }
-    #else
-#error "poly_getnoise in poly.c only supports eta in {3,4,5}"
-    #endif
 }