diff --git a/third_party/LLVM/include-linux/llvm/Config/config.h b/third_party/LLVM/include-linux/llvm/Config/config.h
index 08ae033..509bc26 100644
--- a/third_party/LLVM/include-linux/llvm/Config/config.h
+++ b/third_party/LLVM/include-linux/llvm/Config/config.h
@@ -669,7 +669,7 @@
 #undef STAT_MACROS_BROKEN
 
 /* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
-#undef TIME_WITH_SYS_TIME
+#define TIME_WITH_SYS_TIME 1
 
 /* Define to 1 if your <sys/time.h> declares `struct tm'. */
 #undef TM_IN_SYS_TIME