diff --git a/buildEvolve.js b/buildEvolve.js
index fb3baebe4..22c7ee8cb 100644
--- a/buildEvolve.js
+++ b/buildEvolve.js
@@ -1,7 +1,7 @@
 require("esbuild")
   .build({
     logLevel: "info",
-    entryPoints: ["./src/main.js"],
+    entryPoints: ["./src/main-repaired.js"],
     bundle: true,
     minify: true,
     outfile: "evolve/main.js",
diff --git a/buildEvolveDebug.js b/buildEvolveDebug.js
index 984cd2ba1..e5a467bf7 100644
--- a/buildEvolveDebug.js
+++ b/buildEvolveDebug.js
@@ -1,7 +1,7 @@
 require("esbuild")
   .build({
     logLevel: "debug",
-    entryPoints: ["./src/main.js"],
+    entryPoints: ["./src/main-repaired.js"],
     bundle: true,
     minify: false,
     sourcemap : true,
diff --git a/src/main-repaired.js b/src/main-repaired.js
new file mode 100644
index 000000000..4712f9444
--- /dev/null
+++ b/src/main-repaired.js
@@ -0,0 +1,2 @@
+import './repair-terrifying-trade.js';
+import './main.js';
diff --git a/src/repair-terrifying-trade.js b/src/repair-terrifying-trade.js
new file mode 100644
index 000000000..d86444e0c
--- /dev/null
+++ b/src/repair-terrifying-trade.js
@@ -0,0 +1,22 @@
+import { global } from './vars.js';
+import { cleanAddTrait } from './races.js';
+
+/**
+ * Repair an invalid Trade state left by an imitated Terrifying trait.
+ *
+ * Affected saves can retain researched Trade technology and Trade Posts while
+ * Terrifying is active. cleanAddTrait() owns the canonical transition into
+ * purgatory, including route, queue, and market cleanup.
+ */
+export function repairTerrifyingTrade(){
+    const imitatedTerrifying = global.race?.imitation && global.race?.terrifying && (
+        global.race?.iTraits?.terrifying === 0 || global.race?.srace === 'balorg'
+    );
+    const activeLocalTrade = global.tech?.trade || global.city?.trade;
+
+    if (imitatedTerrifying && activeLocalTrade){
+        cleanAddTrait('terrifying');
+    }
+}
+
+repairTerrifyingTrade();
\ No newline at end of file