diff --git a/compiler-rt/lib/msan/msan_interceptors.cc b/compiler-rt/lib/msan/msan_interceptors.cc
index 9f346a55a81e..393a99024121 100644
--- a/compiler-rt/lib/msan/msan_interceptors.cc
+++ b/compiler-rt/lib/msan/msan_interceptors.cc
@@ -39,6 +39,7 @@
 #define fstat __fstat50
 #define gettimeofday __gettimeofday50
 #define getrusage __getrusage50
+#define tzset __tzset50
 #endif
 
 #include <stdarg.h>