diff --git a/compiler-rt/test/asan/TestCases/Linux/swapcontext_annotation.cc b/compiler-rt/test/asan/TestCases/Linux/swapcontext_annotation.cc
index 44189c060815..3bfda735307b 100644
--- a/compiler-rt/test/asan/TestCases/Linux/swapcontext_annotation.cc
+++ b/compiler-rt/test/asan/TestCases/Linux/swapcontext_annotation.cc
@@ -16,6 +16,7 @@
 
 #include <pthread.h>
 #include <setjmp.h>
+#include <signal.h>
 #include <stdio.h>
 #include <sys/time.h>
 #include <ucontext.h>