diff --git a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/utils/StringUtils.kt b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/utils/StringUtils.kt
index 8fbb3e046..7a22427f2 100644
--- a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/utils/StringUtils.kt
+++ b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/utils/StringUtils.kt
@@ -112,4 +112,6 @@ fun String.startsWithAny(terms: List<DualCase>): Boolean {
 class DualCase(
     val lowercase: String,
     val uppercase: String,
-)
+) {
+    constructor(anyCase: String) : this(anyCase.lowercase(), anyCase.uppercase())
+}