diff --git a/doc/JSON_INFO.md b/doc/JSON_INFO.md
index c5f05b36b9a9d..92e99a03c5b64 100644
--- a/doc/JSON_INFO.md
+++ b/doc/JSON_INFO.md
@@ -487,6 +487,8 @@ The syntax listed here is still valid.
 | `latent_heat`    | Latent heat of fusion for a material (J/g). Default 334.
 | `freeze_point`   | Freezing point of this material (F). Default 32 F ( 0 C ).
 
+There are six -resist parameters: acid, bash, chip, cut, elec, and fire. These are integer values; the default is 0 and they can be negative to take more damage.
+
 ```C++
 {
     "type": "material",