diff --git a/apps/app_voicemail.c b/apps/app_voicemail.c
index c69e7854f6eadf3ecbc59eb78fd54830091503eb..9cd2fcd91c1627c2ff414514f7237d4695c422d5 100644
--- a/apps/app_voicemail.c
+++ b/apps/app_voicemail.c
@@ -94,6 +94,9 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 #include <sys/mman.h>
 #include <time.h>
 #include <dirent.h>
+#if defined(__FreeBSD__)
+#include <sys/wait.h>
+#endif
 
 #include "asterisk/logger.h"
 #include "asterisk/lock.h"