diff --git a/vlsisapd/examples/spice/cplusplus/parseSpice.cpp b/vlsisapd/examples/spice/cplusplus/parseSpice.cpp
index f13cc309..d25ae206 100644
--- a/vlsisapd/examples/spice/cplusplus/parseSpice.cpp
+++ b/vlsisapd/examples/spice/cplusplus/parseSpice.cpp
@@ -1,3 +1,4 @@
+#include <cstdlib>
 #include <iostream>
 #include <string>
 #include <map>