diff --git a/include/llvm/Support/DataTypes.h b/include/llvm/Support/DataTypes.h
index 2f6947963c9..0b20d90acd7 100644
--- a/include/llvm/Support/DataTypes.h
+++ b/include/llvm/Support/DataTypes.h
@@ -20,6 +20,7 @@
 #define LLVM_SUPPORT_DATATYPES_H
 
 #ifdef LINUX
+#define __STDC_LIMIT_MACROS 1
 #include <stdint.h>       // Defined by ISO C 99
 #include <endian.h>