diff --git a/darwin/DarwinProcessList.c b/darwin/DarwinProcessList.c
index 27f6d3f8..624db981 100644
--- a/darwin/DarwinProcessList.c
+++ b/darwin/DarwinProcessList.c
@@ -8,6 +8,7 @@ in the source distribution for its full text.
 #include "ProcessList.h"
 #include "DarwinProcess.h"
 #include "DarwinProcessList.h"
+#include "CRT.h"
 
 #include <stdlib.h>
 #include <string.h>