diff --git a/src/ucm/main.c b/src/ucm/main.c
index 42fdaa1d..d4645e4a 100644
--- a/src/ucm/main.c
+++ b/src/ucm/main.c
@@ -37,6 +37,7 @@
 #include <stdarg.h>
 #include <pthread.h>
 #include <sys/stat.h>
+#include <sys/wait.h>
 #include <limits.h>
 
 /*