diff --git a/client/README.md b/client/README.md
index a2850c925..debb468ec 100644
--- a/client/README.md
+++ b/client/README.md
@@ -20,6 +20,5 @@ pnpm start
 # .env
 REACT_APP_TCHIC_MODE="omni" # "btchi" or "ktchi", in prod
 REACT_APP_API_URL="wherever the related tachi-server is hosted."
-# REACT_APP_MANDATE_LOGIN="true" # Whether to mandate logins or not. This should be "true" for ktchi, and false for btchi.
 ```
 
diff --git a/client/src/lib/config.ts b/client/src/lib/config.ts
index 082760d03..f9c47cd6c 100644
--- a/client/src/lib/config.ts
+++ b/client/src/lib/config.ts
@@ -3,7 +3,7 @@ import { StaticConfig } from "tachi-common";
 export const mode = process.env.REACT_APP_TCHIC_MODE;
 
 if (!mode) {
-	throw new Error("No TCHIC_MODE set. Cannot boot.");
+	throw new Error("No REACT_APP_TCHIC_MODE set in Process Environment, refusing to boot.");
 }
 
 let conf;
@@ -25,11 +25,11 @@ if (mode === "ktchi") {
 		primary: "#e61c6e",
 	};
 } else {
-	throw new Error(`Invalid TCHIC_MODE of ${mode}. Cannot boot.`);
+	throw new Error("Invalid REACT_APP_TCHIC_MODE. Expected ktchi, btchi or omni.");
 }
 
 export const TachiConfig = conf;
 export const ColourConfig = colourConf;
 export const ClientConfig = {
-	MANDATE_LOGIN: !!process.env.REACT_APP_MANDATE_LOGIN,
+	MANDATE_LOGIN: process.env.REACT_APP_TCHIC_MODE === "ktchi",
 };