diff --git a/procbench_0.9.0a/procbench_0.9.0aubuntu3~intrepid/src/multi_cpu.cpp b/procbench_0.9.0a/procbench_0.9.0aubuntu3~intrepid/src/multi_cpu.cpp

index 9bfa378..90e62cd 100644

--- a/procbench_0.9.0a/procbench_0.9.0aubuntu3~intrepid/src/multi_cpu.cpp

+++ b/procbench_0.9.0a/procbench_0.9.0aubuntu3~intrepid/src/multi_cpu.cpp

@@ -19,7 +19,9 @@

        *  USA.

        */ 

+#include <unistd.h>

 #include <stdlib.h>

+#include <stdio.h>

 #include <string>

 #include "cross.h"

 #ifdef __WIN32__