diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ef30d99..9319676c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 * Fix flat_streambuf
 * Add ub sanitizer blacklist
 * Add -funsigned-char to asan build target
+* Fix narrowing warning in table constants
 
 WebSocket:
 
diff --git a/include/beast/http/detail/rfc7230.hpp b/include/beast/http/detail/rfc7230.hpp
index 518efb82..f5fba0a1 100644
--- a/include/beast/http/detail/rfc7230.hpp
+++ b/include/beast/http/detail/rfc7230.hpp
@@ -238,7 +238,7 @@ inline
 std::int8_t
 unhex(char c)
 {
-    static char constexpr tab[] = {
+    static signed char constexpr tab[] = {
         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 0
         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 16
         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 32