diff --git a/test/unit/generateCtfdData-spec.js b/test/unit/generateCtfdData-spec.js
index 2b64d0f..62e1fb9 100644
--- a/test/unit/generateCtfdData-spec.js
+++ b/test/unit/generateCtfdData-spec.js
@@ -42,7 +42,7 @@ describe('Generated CTFd data', () => {
   )
 
   it('should log generator error to console', () =>
-    expect(generateData({ c1: undefined }, defaultOptions)).to.be.rejectedWith('Failed to generate challenge data! Cannot read properties of undefined (reading \'difficulty\')')
+    expect(generateData({ c1: undefined }, defaultOptions)).to.be.rejectedWith('Failed to generate challenge data! Cannot read properties of undefined (reading')
   )
 
   it('should fill the hint property for a single text hint defined on a challenge', () => {
diff --git a/test/unit/generateRtbData-spec.js b/test/unit/generateRtbData-spec.js
index 2cb7b5a..0854472 100644
--- a/test/unit/generateRtbData-spec.js
+++ b/test/unit/generateRtbData-spec.js
@@ -32,7 +32,7 @@ describe('Generated RTB data', () => {
   )
 
   it('should log generator error to console', () =>
-    expect(generateData({ c1: undefined }, defaultOptions)).to.be.rejectedWith('Failed to generate challenge data! Cannot read properties of undefined (reading \'category\')')
+    expect(generateData({ c1: undefined }, defaultOptions)).to.be.rejectedWith('Failed to generate challenge data! Cannot read properties of undefined (reading')
   )
 
   it('should contain one <box> per given challenge category', function () {