diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index 2cb36e9..dddcb73 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -35,7 +35,7 @@
  */
 #include <limits.h>
 #if CHAR_BIT != 8
-#error "mbed TLS requires a platform with 8-bit chars"
+#error "Mbed TLS requires a platform with 8-bit chars"
 #endif
 
 #if defined(_WIN32)