diff --git a/server-tools/instance-manager/angel.cc b/server-tools/instance-manager/angel.cc
index 09d675b291d..4de0b1fe2b9 100644
--- a/server-tools/instance-manager/angel.cc
+++ b/server-tools/instance-manager/angel.cc
@@ -26,6 +26,7 @@
 
 #include "my_global.h"
 #include "my_alarm.h"
+#include "my_dir.h"
 #include "my_sys.h"
 
 /* Include other IM files. */