diff --git a/src/systemc/ext/tlm b/src/systemc/ext/tlm
index 3e671f7..1516151 100644
--- a/src/systemc/ext/tlm
+++ b/src/systemc/ext/tlm
@@ -20,6 +20,7 @@
 #ifndef __SYSTEMC_EXT_TLM__
 #define __SYSTEMC_EXT_TLM__
 
+#include <cstring>
 #include <systemc>    // main SystemC header
 
 #include "tlm_core/2/version.h"