diff --git a/crypto/ec/ec.c b/crypto/ec/ec.c
index 570f27e..ec01766 100644
--- a/crypto/ec/ec.c
+++ b/crypto/ec/ec.c
@@ -564,7 +564,7 @@
 
 int EC_GROUP_get_curve_name(const EC_GROUP *group) { return group->curve_name; }
 
-int EC_GROUP_get_degree(const EC_GROUP *group) {
+unsigned EC_GROUP_get_degree(const EC_GROUP *group) {
   return ec_GFp_simple_group_get_degree(group);
 }
 
diff --git a/crypto/ec/internal.h b/crypto/ec/internal.h
index 6fdaf41..459bab5 100644
--- a/crypto/ec/internal.h
+++ b/crypto/ec/internal.h
@@ -178,7 +178,7 @@
                                   const BIGNUM *b, BN_CTX *);
 int ec_GFp_simple_group_get_curve(const EC_GROUP *, BIGNUM *p, BIGNUM *a,
                                   BIGNUM *b, BN_CTX *);
-int ec_GFp_simple_group_get_degree(const EC_GROUP *);
+unsigned ec_GFp_simple_group_get_degree(const EC_GROUP *);
 int ec_GFp_simple_group_check_discriminant(const EC_GROUP *, BN_CTX *);
 int ec_GFp_simple_point_init(EC_POINT *);
 void ec_GFp_simple_point_finish(EC_POINT *);
diff --git a/crypto/ec/simple.c b/crypto/ec/simple.c
index 2695fda..7e611eb 100644
--- a/crypto/ec/simple.c
+++ b/crypto/ec/simple.c
@@ -245,7 +245,7 @@
   return ret;
 }
 
-int ec_GFp_simple_group_get_degree(const EC_GROUP *group) {
+unsigned ec_GFp_simple_group_get_degree(const EC_GROUP *group) {
   return BN_num_bits(&group->field);
 }
 
diff --git a/include/openssl/ec.h b/include/openssl/ec.h
index b632646..fe1c89e 100644
--- a/include/openssl/ec.h
+++ b/include/openssl/ec.h
@@ -144,7 +144,7 @@
 
 /* EC_GROUP_get_degree returns the number of bits needed to represent an
  * element of the field underlying |group|. */
-OPENSSL_EXPORT int EC_GROUP_get_degree(const EC_GROUP *group);
+OPENSSL_EXPORT unsigned EC_GROUP_get_degree(const EC_GROUP *group);
 
 /* EC_GROUP_precompute_mult precomputes multiplies of the generator in order to
  * speed up operations that involve calculating generator multiples. It returns
diff --git a/ssl/s3_clnt.c b/ssl/s3_clnt.c
index 07ce9f3..13bc0e8 100644
--- a/ssl/s3_clnt.c
+++ b/ssl/s3_clnt.c
@@ -1566,6 +1566,8 @@
   return 1;
 }
 
+OPENSSL_COMPILE_ASSERT(sizeof(size_t) >= sizeof(unsigned),
+                       SIZE_T_IS_SMALLER_THAN_UNSIGNED);
 
 int ssl3_send_client_key_exchange(SSL *s) {
   uint8_t *p;
@@ -1739,7 +1741,7 @@
     } else if (alg_k & SSL_kECDHE) {
       const EC_GROUP *srvr_group = NULL;
       EC_KEY *tkey;
-      int field_size = 0, ecdh_len;
+      int ecdh_len;
 
       if (s->s3->tmp.peer_ecdh_tmp == NULL) {
         OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
@@ -1772,8 +1774,8 @@
         goto err;
       }
 
-      field_size = EC_GROUP_get_degree(srvr_group);
-      if (field_size <= 0) {
+      unsigned field_size = EC_GROUP_get_degree(srvr_group);
+      if (field_size == 0) {
         OPENSSL_PUT_ERROR(SSL, ERR_R_ECDH_LIB);
         goto err;
       }
diff --git a/ssl/s3_srvr.c b/ssl/s3_srvr.c
index c9b8172..fad2d0a 100644
--- a/ssl/s3_srvr.c
+++ b/ssl/s3_srvr.c
@@ -1854,7 +1854,7 @@
 
     premaster_secret_len = dh_len;
   } else if (alg_k & SSL_kECDHE) {
-    int field_size = 0, ecdh_len;
+    int ecdh_len;
     const EC_KEY *tkey;
     const EC_GROUP *group;
     const BIGNUM *priv_key;
@@ -1909,8 +1909,8 @@
     }
 
     /* Allocate a buffer for both the secret and the PSK. */
-    field_size = EC_GROUP_get_degree(group);
-    if (field_size <= 0) {
+    unsigned field_size = EC_GROUP_get_degree(group);
+    if (field_size == 0) {
       OPENSSL_PUT_ERROR(SSL, ERR_R_ECDH_LIB);
       goto err;
     }