diff --git a/cmd/verify.go b/cmd/verify.go
index 829a10c4..6c152f2e 100644
--- a/cmd/verify.go
+++ b/cmd/verify.go
@@ -110,7 +110,7 @@ func convertToMap(values []string) map[string]interface{} {
 	valueMap := make(map[string]interface{})
 	for _, val := range values {
 		parts := strings.SplitN(val, "=", 2)
-		valueMap[strings.ToLower(parts[0])] = parts[1]
+		valueMap[parts[0]] = parts[1]
 	}
 	return valueMap
 }
diff --git a/cmd/verify_test.go b/cmd/verify_test.go
index 3439443d..2938a6fd 100644
--- a/cmd/verify_test.go
+++ b/cmd/verify_test.go
@@ -114,6 +114,28 @@ func TestCertify(t *testing.T) {
 				require.Contains(t, output.String(), expected)
 			},
 		},
+		{
+			name: "Should succeed when the chart exists and a chart value is overridden",
+			args: []string{
+				"-e", "helm-lint",
+				"-S", "replicaCount=2",
+				"-E",
+				"../internal/chartverifier/checks/chart-0.1.0-v3.with-additionalproperties-false.tgz",
+			},
+			validateErrorFunc: func(err error) {
+				require.NoError(t, err)
+			},
+			validateOutputFunc: func(output *bytes.Buffer) {
+				require.NotEmpty(t, output.String())
+
+				expected := "results:\n" +
+					"    - check: v1.0/helm-lint\n" +
+					"      type: Mandatory\n" +
+					"      outcome: PASS\n" +
+					"      reason: Helm lint successful\n"
+				require.Contains(t, output.String(), expected)
+			},
+		},
 		{
 			name: "Should display JSON certificate when option --output and argument values are given",
 			args: []string{
diff --git a/internal/chartverifier/checks/chart-0.1.0-v3.with-additionalproperties-false.tgz b/internal/chartverifier/checks/chart-0.1.0-v3.with-additionalproperties-false.tgz
new file mode 100644
index 00000000..d26bc639
Binary files /dev/null and b/internal/chartverifier/checks/chart-0.1.0-v3.with-additionalproperties-false.tgz differ