diff --git a/js/common/tests/shell/shell-foxx-manager-install-spec.js b/js/common/tests/shell/shell-foxx-manager-install-spec.js
index e9aec8ff3b..47dab8ce18 100644
--- a/js/common/tests/shell/shell-foxx-manager-install-spec.js
+++ b/js/common/tests/shell/shell-foxx-manager-install-spec.js
@@ -110,13 +110,8 @@ describe('Foxx Manager install', function () {
       expect(function () {
         FoxxManager.install(fs.join(basePath, 'malformed-controller-path'), '/unittest/broken');
       }).to.throw(ArangoError).that.satisfies(function (err) {
-        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_FAILURE.code);
-        if (require('@arangodb').isServer) {
-          expect(err).to.have.property('cause').that.is.an.instanceof(ArangoError)
-            .with.a.property('errorNum', errors.ERROR_SYS_ERROR.code);
-        } else {
-          expect(err).not.to.have.property('cause');
-        }
+        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_NOT_FOUND.code);
+        expect(err).not.to.have.property('cause');
         return true;
       });
     });
@@ -125,11 +120,10 @@ describe('Foxx Manager install', function () {
       expect(function () {
         FoxxManager.install(fs.join(basePath, 'broken-controller-file'), '/unittest/broken');
       }).to.throw(ArangoError).that.satisfies(function (err) {
-        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_FAILURE.code);
+        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_SYNTAX_ERROR.code);
         if (require('@arangodb').isServer) {
-          expect(err).to.have.property('cause');
-          expect(err.cause).not.to.be.an.instanceof(SyntaxError);
-          expect(err.cause).not.to.be.an.instanceof(ArangoError);
+          expect(err).to.have.property('cause')
+            .that.is.an.instanceof(SyntaxError);
         } else {
           expect(err).not.to.have.property('cause');
         }
@@ -188,14 +182,8 @@ describe('Foxx Manager install', function () {
       expect(function () {
         FoxxManager.install(fs.join(basePath, 'malformed-exports-path'), '/unittest/broken');
       }).to.throw(ArangoError).that.satisfies(function (err) {
-        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_FAILURE.code);
-        if (require('@arangodb').isServer) {
-          expect(err).to.have.property('cause')
-            .that.is.an.instanceof(ArangoError)
-            .with.a.property('errorNum', errors.ERROR_SYS_ERROR.code);
-        } else {
-          expect(err).not.to.have.property('cause');
-        }
+        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_NOT_FOUND.code);
+        expect(err).not.to.have.property('cause');
         return true;
       });
     });
@@ -219,14 +207,8 @@ describe('Foxx Manager install', function () {
       expect(function () {
         FoxxManager.install(fs.join(basePath, 'malformed-setup-path'), '/unittest/broken');
       }).to.throw(ArangoError).that.satisfies(function (err) {
-        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_FAILURE.code);
-        if (require('@arangodb').isServer) {
-          expect(err).to.have.property('cause')
-            .that.is.an.instanceof(ArangoError)
-            .with.a.property('errorNum', errors.ERROR_SYS_ERROR.code);
-        } else {
-          expect(err).not.to.have.property('cause');
-        }
+        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_NOT_FOUND.code);
+        expect(err).not.to.have.property('cause');
         return true;
       });
     });
@@ -235,14 +217,8 @@ describe('Foxx Manager install', function () {
       expect(function () {
         FoxxManager.install(fs.join(basePath, 'missing-controller-file'), '/unittest/broken');
       }).to.throw(ArangoError).that.satisfies(function (err) {
-        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_FAILURE.code);
-        if (require('@arangodb').isServer) {
-          expect(err).to.have.property('cause')
-            .that.is.an.instanceof(ArangoError)
-            .with.a.property('errorNum', errors.ERROR_SYS_ERROR.code);
-        } else {
-          expect(err).not.to.have.property('cause');
-        }
+        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_NOT_FOUND.code);
+        expect(err).not.to.have.property('cause');
         return true;
       });
     });
@@ -251,14 +227,8 @@ describe('Foxx Manager install', function () {
       expect(function () {
         FoxxManager.install(fs.join(basePath, 'missing-exports-file'), '/unittest/broken');
       }).to.throw(ArangoError).that.satisfies(function (err) {
-        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_FAILURE.code);
-        if (require('@arangodb').isServer) {
-          expect(err).to.have.property('cause')
-            .that.is.an.instanceof(ArangoError)
-            .with.a.property('errorNum', errors.ERROR_SYS_ERROR.code);
-        } else {
-          expect(err).not.to.have.property('cause');
-        }
+        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_NOT_FOUND.code);
+        expect(err).not.to.have.property('cause');
         return true;
       });
     });
@@ -267,14 +237,8 @@ describe('Foxx Manager install', function () {
       expect(function () {
         FoxxManager.install(fs.join(basePath, 'missing-setup-file'), '/unittest/broken');
       }).to.throw(ArangoError).that.satisfies(function (err) {
-        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_FAILURE.code);
-        if (require('@arangodb').isServer) {
-          expect(err).to.have.property('cause')
-            .that.is.an.instanceof(ArangoError)
-            .with.a.property('errorNum', errors.ERROR_SYS_ERROR.code);
-        } else {
-          expect(err).not.to.have.property('cause');
-        }
+        expect(err).to.have.property('errorNum', errors.ERROR_MODULE_NOT_FOUND.code);
+        expect(err).not.to.have.property('cause');
         return true;
       });
     });