diff --git a/base/common/types.h b/base/common/types.h
index f3572da2972..bd5c28fe73b 100644
--- a/base/common/types.h
+++ b/base/common/types.h
@@ -8,7 +8,7 @@ using Int16 = int16_t;
 using Int32 = int32_t;
 using Int64 = int64_t;
 
-#if __cplusplus <= 201703L
+#ifndef __cpp_char8_t
 using char8_t = unsigned char;
 #endif