diff --git a/library/ecp.c b/library/ecp.c
index 7ea8b1676a..7c67e4679d 100644
--- a/library/ecp.c
+++ b/library/ecp.c
@@ -2068,7 +2068,7 @@ static int ecp_mul_comb_core( const mbedtls_ecp_group *grp, mbedtls_ecp_point *R
                               void *p_rng,
                               mbedtls_ecp_restart_ctx *rs_ctx )
 {
-    int ret;
+    int ret = 0;
     mbedtls_ecp_point Txi;
     size_t i;
 
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index a40b46a1c0..3166ccab7d 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -5691,7 +5691,7 @@ static int ssl_parse_certificate_chain( mbedtls_ssl_context *ssl )
 
 int mbedtls_ssl_parse_certificate( mbedtls_ssl_context *ssl )
 {
-    int ret;
+    int ret = 0;
     const mbedtls_ssl_ciphersuite_t * const ciphersuite_info =
           ssl->transform_negotiate->ciphersuite_info;
 #if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)