diff --git a/test/sanitizer_common/TestCases/Linux/signal_send.cpp b/test/sanitizer_common/TestCases/Linux/signal_send.cpp
index 84084b9..f5dcc4b 100644
--- a/test/sanitizer_common/TestCases/Linux/signal_send.cpp
+++ b/test/sanitizer_common/TestCases/Linux/signal_send.cpp
@@ -5,6 +5,7 @@
 
 #include <assert.h>
 #include <signal.h>
+#include <stdarg.h>
 #include <stdio.h>
 #include <sys/time.h>
 #include <sys/wait.h>