diff --git a/xmake/actions/checkfiles.lua b/xmake/actions/checkfiles.lua
index 485fff66d..12f9bbcd9 100644
--- a/xmake/actions/checkfiles.lua
+++ b/xmake/actions/checkfiles.lua
@@ -43,6 +43,7 @@ local systemHeaders = {
 	["poll.h"] = true,
 	["process.h"] = true,
 	["pthread.h"] = true,
+	["signal.h"] = true,
 	["spawn.h"] = true,
 	["unistd.h"] = true,
 	["windows.h"] = true,