diff --git a/e2e/testcases/domain_classify.go b/e2e/testcases/domain_classify.go
index 87eb247fa..1dfaf170c 100644
--- a/e2e/testcases/domain_classify.go
+++ b/e2e/testcases/domain_classify.go
@@ -92,6 +92,11 @@ func testDomainClassify(ctx context.Context, client *kubernetes.Clientset, opts
 			correctTests, totalTests, accuracy)
 	}
 
+	// Return error if accuracy is 0%
+	if correctTests == 0 {
+		return fmt.Errorf("domain classification test failed: 0%% accuracy (0/%d correct)", totalTests)
+	}
+
 	return nil
 }
 
diff --git a/e2e/testcases/jailbreak_detection.go b/e2e/testcases/jailbreak_detection.go
index 7620b57e7..9070e851a 100644
--- a/e2e/testcases/jailbreak_detection.go
+++ b/e2e/testcases/jailbreak_detection.go
@@ -103,6 +103,11 @@ func testJailbreakDetection(ctx context.Context, client *kubernetes.Clientset, o
 			correctTests, totalTests, detectionRate)
 	}
 
+	// Return error if detection rate is 0%
+	if correctTests == 0 {
+		return fmt.Errorf("jailbreak detection test failed: 0%% accuracy (0/%d correct)", totalTests)
+	}
+
 	return nil
 }
 
diff --git a/e2e/testcases/pii_detection.go b/e2e/testcases/pii_detection.go
index 368480c86..bf56917a7 100644
--- a/e2e/testcases/pii_detection.go
+++ b/e2e/testcases/pii_detection.go
@@ -103,6 +103,11 @@ func testPIIDetection(ctx context.Context, client *kubernetes.Clientset, opts pk
 			correctTests, totalTests, detectionRate)
 	}
 
+	// Return error if detection rate is 0%
+	if correctTests == 0 {
+		return fmt.Errorf("PII detection test failed: 0%% accuracy (0/%d correct)", totalTests)
+	}
+
 	return nil
 }