diff --git a/src/uv-unix.c b/src/uv-unix.c
index bbc5a06c..f2ff56b3 100644
--- a/src/uv-unix.c
+++ b/src/uv-unix.c
@@ -62,6 +62,7 @@
 
 #if defined(__FreeBSD__)
 #include <sys/sysctl.h>
+#include <sys/wait.h>
 #endif