diff --git a/quartz/build.gradle.kts b/quartz/build.gradle.kts
index 3262cc64e..d292ff3eb 100644
--- a/quartz/build.gradle.kts
+++ b/quartz/build.gradle.kts
@@ -11,7 +11,7 @@ plugins {
     alias(libs.plugins.androidKotlinMultiplatformLibrary)
     alias(libs.plugins.serialization)
     alias(libs.plugins.vanniktech.mavenPublish)
-    id("io.github.frankois944.spmForKmp") version "1.4.0"
+    id("io.github.frankois944.spmForKmp") version "1.4.8"
 }
 
 kotlin {
diff --git a/quartz/src/iosMain/kotlin/com/vitorpamplona/quartz/utils/UnicodeNormalizer.ios.kt b/quartz/src/iosMain/kotlin/com/vitorpamplona/quartz/utils/UnicodeNormalizer.ios.kt
index ea6ee933a..56971b710 100644
--- a/quartz/src/iosMain/kotlin/com/vitorpamplona/quartz/utils/UnicodeNormalizer.ios.kt
+++ b/quartz/src/iosMain/kotlin/com/vitorpamplona/quartz/utils/UnicodeNormalizer.ios.kt
@@ -26,7 +26,7 @@ import platform.Foundation.precomposedStringWithCompatibilityMapping
 actual class UnicodeNormalizer {
     actual fun normalizeNFKC(input: String): String {
         @Suppress("CAST_NEVER_SUCCEEDS")
-        val platformString = this as NSString
+        val platformString = input as NSString
         return platformString.precomposedStringWithCompatibilityMapping
     }
 }