diff --git a/compiler-plugin/src/main/kotlin/tech/mappie/MappieCompilerPluginRegistrar.kt b/compiler-plugin/src/main/kotlin/tech/mappie/MappieCompilerPluginRegistrar.kt
index acde5c55..ae694b7a 100644
--- a/compiler-plugin/src/main/kotlin/tech/mappie/MappieCompilerPluginRegistrar.kt
+++ b/compiler-plugin/src/main/kotlin/tech/mappie/MappieCompilerPluginRegistrar.kt
@@ -19,6 +19,7 @@ class MappieCompilerPluginRegistrar : CompilerPluginRegistrar() {
     override val supportsK2: Boolean = true
 
     override fun ExtensionStorage.registerExtensions(configuration: CompilerConfiguration) {
+
         val messageCollector = configuration.get(CLIConfigurationKeys.MESSAGE_COLLECTOR_KEY, MessageCollector.NONE)
         IrGenerationExtension.registerExtension(
             MappieIrRegistrar(
diff --git a/compiler-plugin/src/main/kotlin/tech/mappie/preprocessing/DefinitionsCollector.kt b/compiler-plugin/src/main/kotlin/tech/mappie/preprocessing/DefinitionsCollector.kt
index f1c53335..6c786512 100644
--- a/compiler-plugin/src/main/kotlin/tech/mappie/preprocessing/DefinitionsCollector.kt
+++ b/compiler-plugin/src/main/kotlin/tech/mappie/preprocessing/DefinitionsCollector.kt
@@ -26,7 +26,8 @@ class DefinitionsCollector(val context: MappieContext) {
 
 class BuiltinMappieDefinitionsCollector(val context: MappieContext) {
     fun collect() = MAPPERS
-        .map { name -> context.pluginContext.referenceClass(ClassId(FqName(PACKAGE), Name.identifier(name)))!!.owner }
+        .map { name -> context.pluginContext.referenceClass(ClassId(FqName(PACKAGE), Name.identifier(name)))?.owner }
+        .filterNotNull()
         .map { MappieDefinition(it) }
 
     companion object {
diff --git a/gradle.properties b/gradle.properties
index d12cae79..6177143b 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1 +1 @@
-version=0.9.1
\ No newline at end of file
+version=0.9.2
\ No newline at end of file
diff --git a/website/src/changelog.md b/website/src/changelog.md
index 5cd4c431..509950b4 100644
--- a/website/src/changelog.md
+++ b/website/src/changelog.md
@@ -2,6 +2,10 @@
 title: "Changelog"
 layout: "layouts/changelog.html"
 changelog:
+    - date: "2024-11-18"
+      title: "v0.9.2"
+      items:
+        - "Fixed null pointer in some cases."
     - date: "2024-11-16"
       title: "v0.9.1"
       items: