diff --git a/mlkem/poly.c b/mlkem/poly.c
index 81973cd4..6fcc69b0 100644
--- a/mlkem/poly.c
+++ b/mlkem/poly.c
@@ -372,25 +372,6 @@ void poly_tomsg(uint8_t msg[KYBER_INDCPA_MSGBYTES], const poly *a)
     }
 }
 
-/*************************************************
-* Name:        poly_getnoise_eta1
-*
-* Description: Sample a polynomial deterministically from a seed and a nonce,
-*              with output polynomial close to centered binomial distribution
-*              with parameter KYBER_ETA1
-*
-* Arguments:   - poly *r: pointer to output polynomial
-*              - const uint8_t *seed: pointer to input seed
-*                                     (of length KYBER_SYMBYTES bytes)
-*              - uint8_t nonce: one-byte input nonce
-**************************************************/
-void poly_getnoise_eta1(poly *r, const uint8_t seed[KYBER_SYMBYTES], uint8_t nonce)
-{
-    uint8_t buf[KYBER_ETA1 * KYBER_N / 4];
-    prf(buf, sizeof(buf), seed, nonce);
-    poly_cbd_eta1(r, buf);
-}
-
 /*************************************************
 * Name:        poly_getnoise_eta1_4x
 *
diff --git a/mlkem/poly.h b/mlkem/poly.h
index 6950568a..3b21853d 100644
--- a/mlkem/poly.h
+++ b/mlkem/poly.h
@@ -93,9 +93,6 @@ void poly_frommsg(poly *r, const uint8_t msg[KYBER_INDCPA_MSGBYTES]);
 #define poly_tomsg KYBER_NAMESPACE(poly_tomsg)
 void poly_tomsg(uint8_t msg[KYBER_INDCPA_MSGBYTES], const poly *r);
 
-#define poly_getnoise_eta1 KYBER_NAMESPACE(poly_getnoise_eta1)
-void poly_getnoise_eta1(poly *r, const uint8_t seed[KYBER_SYMBYTES], uint8_t nonce);
-
 #define poly_getnoise_eta1_4x KYBER_NAMESPACE(poly_getnoise_eta1_4x)
 void poly_getnoise_eta1_4x(poly *r0,
                            poly *r1,