diff --git a/app-common/src/main/java/im/angry/openeuicc/util/ActivationCode.kt b/app-common/src/main/java/im/angry/openeuicc/util/ActivationCode.kt
index 296fe22..ec59d36 100644
--- a/app-common/src/main/java/im/angry/openeuicc/util/ActivationCode.kt
+++ b/app-common/src/main/java/im/angry/openeuicc/util/ActivationCode.kt
@@ -9,7 +9,7 @@ data class ActivationCode(
     companion object {
         fun fromString(input: String): ActivationCode {
             check(input.startsWith("LPA:", ignoreCase = true)) { "Invalid activation code format" }
-            val components = input.drop(4).split('$').map(String::trim).map { it.ifBlank { null } }
+            val components = input.drop(4).split('$').map { it.trim().ifEmpty { null } }
             check(components.size >= 2) { "Invalid activation code format" }
             check(components[0] == "1") { "Invalid activation code version" }
             return ActivationCode(