diff --git a/library/rsa.c b/library/rsa.c
index 3f480a3..67ebf84 100644
--- a/library/rsa.c
+++ b/library/rsa.c
@@ -2275,7 +2275,7 @@
     if ( ret != 0 )
         goto exit;
 
-    if( mbedtls_platform_memcmp( hash_start, result, hlen ) != 0 )
+    if( mbedtls_platform_memequal( hash_start, result, hlen ) != 0 )
     {
         ret = MBEDTLS_ERR_RSA_VERIFY_FAILED;
         goto exit;