diff --git a/library/pk.c b/library/pk.c
index 27276a8..1e991c5 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -597,7 +597,7 @@
 
     if( ret_fi == UECC_SUCCESS )
     {
-        mbedtls_platform_enforce_volatile_reads();
+        mbedtls_platform_random_delay( 50 );
         if( ret_fi == UECC_SUCCESS )
             return( 0 );
         else