diff --git a/patches/@endo+exo+1.4.0.patch b/patches/@endo+exo+1.4.0.patch
index a4fb1d8f40fc..91d08875538e 100644
--- a/patches/@endo+exo+1.4.0.patch
+++ b/patches/@endo+exo+1.4.0.patch
@@ -9,7 +9,7 @@ index 3bc696d..55df34e 100644
  //# sourceMappingURL=index.d.ts.map
 \ No newline at end of file
 diff --git a/node_modules/@endo/exo/src/exo-tools.js b/node_modules/@endo/exo/src/exo-tools.js
-index e091adc..b9eb0d3 100644
+index e091adc..20bf28d 100644
 --- a/node_modules/@endo/exo/src/exo-tools.js
 +++ b/node_modules/@endo/exo/src/exo-tools.js
 @@ -18,7 +18,7 @@ import { GET_INTERFACE_GUARD } from './get-interface.js';
@@ -225,7 +225,7 @@ index e091adc..b9eb0d3 100644
 +    const originalMethod = behaviorMethods[prop];
 +    const { shiftedMethod } = {
 +      shiftedMethod(...args) {
-+        return originalMethod([this, ...args]);
++        return originalMethod(this, ...args);
 +      },
 +    };
 +    const behaviorMethod = thisfulMethods ? originalMethod : shiftedMethod;