diff --git a/compose/src/main/kotlin/io/github/kakaocup/compose/node/assertion/LazyListNodeAssertions.kt b/compose/src/main/kotlin/io/github/kakaocup/compose/node/assertion/LazyListNodeAssertions.kt
index 537fa6b6..8601b448 100644
--- a/compose/src/main/kotlin/io/github/kakaocup/compose/node/assertion/LazyListNodeAssertions.kt
+++ b/compose/src/main/kotlin/io/github/kakaocup/compose/node/assertion/LazyListNodeAssertions.kt
@@ -4,9 +4,11 @@ import androidx.compose.ui.semantics.SemanticsPropertyKey
 import androidx.compose.ui.semantics.getOrNull
 import androidx.compose.ui.test.SemanticsMatcher
 import androidx.compose.ui.test.assert
+import io.github.kakaocup.compose.exception.KakaoComposeException
+import io.github.kakaocup.compose.utilities.checkNotNull
 
 interface LazyListNodeAssertions : NodeAssertions {
-    val lengthSemanticsPropertyKey: SemanticsPropertyKey<Int>
+    val lengthSemanticsPropertyKey: SemanticsPropertyKey<Int>?
 
     /**
      * Asserts that the lazy list length contains the given [length].
@@ -21,7 +23,9 @@ interface LazyListNodeAssertions : NodeAssertions {
     private fun hasLazyListLength(length: Int): SemanticsMatcher = SemanticsMatcher(
         "The length of the lazy list is expected to be ${length}, but the actual size is different"
     ) { node ->
-        val actualLength = node.config.getOrNull(lengthSemanticsPropertyKey) ?: error("Lazy list does not contain $lengthSemanticsPropertyKey modifier")
+        val actualLength = node.config.getOrNull(
+            lengthSemanticsPropertyKey ?: throw KakaoComposeException("lengthSemanticsPropertyKey not provided to `KLazyListNode` constructor")
+        ) ?: error("Lazy list does not contain $lengthSemanticsPropertyKey modifier")
         return@SemanticsMatcher actualLength == length
     }
 }
diff --git a/compose/src/main/kotlin/io/github/kakaocup/compose/node/core/BaseNode.kt b/compose/src/main/kotlin/io/github/kakaocup/compose/node/core/BaseNode.kt
index 68e37984..554988ef 100644
--- a/compose/src/main/kotlin/io/github/kakaocup/compose/node/core/BaseNode.kt
+++ b/compose/src/main/kotlin/io/github/kakaocup/compose/node/core/BaseNode.kt
@@ -88,4 +88,4 @@ abstract class BaseNode<out T : BaseNode<T>> constructor(
 
         return semanticsMatcherList.reduce { finalMatcher, matcher -> finalMatcher and matcher }
     }
-}
+}
\ No newline at end of file
diff --git a/compose/src/main/kotlin/io/github/kakaocup/compose/node/element/lazylist/KLazyListNode.kt b/compose/src/main/kotlin/io/github/kakaocup/compose/node/element/lazylist/KLazyListNode.kt
index 573f4b33..dbbc1651 100644
--- a/compose/src/main/kotlin/io/github/kakaocup/compose/node/element/lazylist/KLazyListNode.kt
+++ b/compose/src/main/kotlin/io/github/kakaocup/compose/node/element/lazylist/KLazyListNode.kt
@@ -24,7 +24,7 @@ class KLazyListNode(
     nodeMatcher: NodeMatcher,
     itemTypeBuilder: KLazyListItemBuilder.() -> Unit,
     val positionMatcher: (position: Int) -> SemanticsMatcher,
-    override val lengthSemanticsPropertyKey: SemanticsPropertyKey<Int>,
+    override val lengthSemanticsPropertyKey: SemanticsPropertyKey<Int>? = null,
 ) : BaseNode<KLazyListNode>(semanticsProvider, nodeMatcher),
     LazyListNodeAssertions {
     val semanticsMatcher = nodeMatcher.matcher
@@ -37,6 +37,7 @@ class KLazyListNode(
      * @param viewBuilderAction ViewBuilder which will result in view's interaction
      * @param itemTypeBuilder Lambda with receiver where you pass your item providers
      * @param positionMatcher Lambda which finds node by given position
+     * @param lengthSemanticsPropertyKey SemanticsPropertyKey with length list size
      *
      * @see ViewBuilder
      */
@@ -45,7 +46,7 @@ class KLazyListNode(
         viewBuilderAction: ViewBuilder.() -> Unit,
         itemTypeBuilder: KLazyListItemBuilder.() -> Unit,
         positionMatcher: (position: Int) -> SemanticsMatcher,
-        lengthSemanticsPropertyKey: SemanticsPropertyKey<Int>
+        lengthSemanticsPropertyKey: SemanticsPropertyKey<Int>? = null
     ) : this(
         semanticsProvider = semanticsProvider,
         nodeMatcher = ViewBuilder().apply(viewBuilderAction).build(),