diff --git a/library/entropy.c b/library/entropy.c
index 8f28733..281ed23 100644
--- a/library/entropy.c
+++ b/library/entropy.c
@@ -370,7 +370,7 @@
     }
     while( ! done );
 
-    mbedtls_platform_memset( buf, 0, MBEDTLS_ENTROPY_BLOCK_SIZE );
+    memset( buf, 0, MBEDTLS_ENTROPY_BLOCK_SIZE );
 
 #if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR)
     /*