diff --git a/tests/server/sws.c b/tests/server/sws.c
index 501bf077db..01991bbc0d 100644
--- a/tests/server/sws.c
+++ b/tests/server/sws.c
@@ -5,6 +5,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <signal.h>
+#include <time.h>
 #include <sys/time.h>
 #include <sys/types.h>
 #include <sys/wait.h>