diff --git a/processor/src/main/kotlin/io/mcarle/konvert/processor/konvert/KonverterCodeGenerator.kt b/processor/src/main/kotlin/io/mcarle/konvert/processor/konvert/KonverterCodeGenerator.kt
index 6025eda..6b5e335 100644
--- a/processor/src/main/kotlin/io/mcarle/konvert/processor/konvert/KonverterCodeGenerator.kt
+++ b/processor/src/main/kotlin/io/mcarle/konvert/processor/konvert/KonverterCodeGenerator.kt
@@ -125,7 +125,7 @@ object KonverterCodeGenerator {
     }
 
     private fun isAlias(typeReference: KSTypeReference, type: KSType): Boolean {
-        return typeReference.toString() != type.makeNotNullable().toString().takeWhile { it != '<' }
+        return typeReference.toString().takeWhile { it != '<' } != type.makeNotNullable().toString().takeWhile { it != '<' }
     }
 
     private fun retrieveCodeBuilder(