diff --git a/test/sanitizer_common/TestCases/Posix/crypt.cpp b/test/sanitizer_common/TestCases/Posix/crypt.cpp
index 7927c6b..17ab696 100644
--- a/test/sanitizer_common/TestCases/Posix/crypt.cpp
+++ b/test/sanitizer_common/TestCases/Posix/crypt.cpp
@@ -6,6 +6,7 @@
 #include <assert.h>
 #include <unistd.h>
 #include <cstring>
+#include <crypt.h>
 
 int
 main (int argc, char** argv)