diff --git a/trick_source/sim_services/DataRecord/DRHDF5.cpp b/trick_source/sim_services/DataRecord/DRHDF5.cpp
index a19e1ac4..24913b36 100644
--- a/trick_source/sim_services/DataRecord/DRHDF5.cpp
+++ b/trick_source/sim_services/DataRecord/DRHDF5.cpp
@@ -5,6 +5,7 @@ PROGRAMMERS:
      ((Warwick Woodard) (NASA) (February 2010) (--) (Initial version))
 */
 
+#include <cstring>
 #include <iostream>
 #include <stdlib.h>