diff --git a/distribution/openrct2.d.ts b/distribution/openrct2.d.ts
index 6e1c81b921..fc26f90cde 100644
--- a/distribution/openrct2.d.ts
+++ b/distribution/openrct2.d.ts
@@ -1164,7 +1164,7 @@ declare global {
         /**
          * The current g-forces of this car.
          */
-        gForces: GForces;
+        readonly gForces: GForces;
 
         /**
          * The progress on the current track piece, in steps.