diff --git a/src/backend/storage/file/execute_pipe.c b/src/backend/storage/file/execute_pipe.c
index 7267c6cebc7f537576018c2a5b6b06ae87a1cea2..ef7e896c5c9517f80933390142a8a045eb884d24 100644
--- a/src/backend/storage/file/execute_pipe.c
+++ b/src/backend/storage/file/execute_pipe.c
@@ -22,6 +22,7 @@
 
 #include <unistd.h>
 #include <sys/wait.h>
+#include <signal.h>
 
 #include "postgres.h"
 #include "storage/execute_pipe.h"