diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index ca267bd..5ea7b94 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -30,7 +30,7 @@
  */
 #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
 
 #include <stdint.h>