diff --git a/library/ssl_cache.c b/library/ssl_cache.c
index 90e2a81..fefc6d0 100644
--- a/library/ssl_cache.c
+++ b/library/ssl_cache.c
@@ -46,7 +46,7 @@
 
 void mbedtls_ssl_cache_init( mbedtls_ssl_cache_context *cache )
 {
-    memset( cache, 0, sizeof( mbedtls_ssl_cache_context ) );
+    mbedtls_platform_memset( cache, 0, sizeof( mbedtls_ssl_cache_context ) );
 
     cache->timeout = MBEDTLS_SSL_CACHE_DEFAULT_TIMEOUT;
     cache->max_entries = MBEDTLS_SSL_CACHE_DEFAULT_MAX_ENTRIES;
@@ -260,7 +260,7 @@
     if( cur->peer_cert.p != NULL )
     {
         mbedtls_free( cur->peer_cert.p );
-        memset( &cur->peer_cert, 0, sizeof(mbedtls_x509_buf) );
+        mbedtls_platform_memset( &cur->peer_cert, 0, sizeof(mbedtls_x509_buf) );
     }
 #endif /* MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */