Introduced entropy_free()
diff --git a/programs/pkey/dh_server.c b/programs/pkey/dh_server.c
index 584ff08..d2b6cc4 100644
--- a/programs/pkey/dh_server.c
+++ b/programs/pkey/dh_server.c
@@ -276,6 +276,7 @@
     net_close( client_fd );
     rsa_free( &rsa );
     dhm_free( &dhm );
+    entropy_free( &entropy );
 
 #if defined(_WIN32)
     printf( "  + Press Enter to exit this program.\n" );