diff --git a/fixture-monkey-kotlin/src/main/kotlin/com/navercorp/fixturemonkey/kotlin/introspector/PrimaryConstructorArbitraryIntrospector.kt b/fixture-monkey-kotlin/src/main/kotlin/com/navercorp/fixturemonkey/kotlin/introspector/PrimaryConstructorArbitraryIntrospector.kt
index e9b610900..1e8d22c87 100644
--- a/fixture-monkey-kotlin/src/main/kotlin/com/navercorp/fixturemonkey/kotlin/introspector/PrimaryConstructorArbitraryIntrospector.kt
+++ b/fixture-monkey-kotlin/src/main/kotlin/com/navercorp/fixturemonkey/kotlin/introspector/PrimaryConstructorArbitraryIntrospector.kt
@@ -32,6 +32,7 @@ import kotlin.reflect.KClass
 import kotlin.reflect.KFunction
 import kotlin.reflect.KParameter
 import kotlin.reflect.full.primaryConstructor
+import kotlin.reflect.jvm.isAccessible
 
 @API(since = "0.4.0", status = MAINTAINED)
 class PrimaryConstructorArbitraryIntrospector : ArbitraryIntrospector {
@@ -54,6 +55,7 @@ class PrimaryConstructorArbitraryIntrospector : ArbitraryIntrospector {
                     val constructor = CONSTRUCTOR_CACHE.computeIfAbsent(type) {
                         requireNotNull(kotlinClass.primaryConstructor) { "No kotlin primary constructor provided for $kotlinClass" }
                     }
+                    constructor.isAccessible = true
 
                     val arbitrariesByPropertyName = it.mapKeys { map -> map.key.objectProperty.property.name }
 
diff --git a/fixture-monkey-tests/kotlin-tests/src/test/kotlin/com/navercorp/fixturemonkey/tests/kotlin/InstantiatorTest.kt b/fixture-monkey-tests/kotlin-tests/src/test/kotlin/com/navercorp/fixturemonkey/tests/kotlin/InstantiatorTest.kt
index 8359a2fb8..a095498e9 100644
--- a/fixture-monkey-tests/kotlin-tests/src/test/kotlin/com/navercorp/fixturemonkey/tests/kotlin/InstantiatorTest.kt
+++ b/fixture-monkey-tests/kotlin-tests/src/test/kotlin/com/navercorp/fixturemonkey/tests/kotlin/InstantiatorTest.kt
@@ -5,6 +5,7 @@ import com.navercorp.fixturemonkey.api.instantiator.Instantiator
 import com.navercorp.fixturemonkey.api.instantiator.Instantiator.constructor
 import com.navercorp.fixturemonkey.kotlin.KotlinPlugin
 import com.navercorp.fixturemonkey.kotlin.giveMeBuilder
+import com.navercorp.fixturemonkey.kotlin.giveMeOne
 import com.navercorp.fixturemonkey.kotlin.instantiator.instantiateBy
 import com.navercorp.fixturemonkey.tests.TestEnvironment.TEST_COUNT
 import org.assertj.core.api.BDDAssertions.then
@@ -446,6 +447,16 @@ class InstantiatorTest {
         then(actual).isNotNull()
     }
 
+    @RepeatedTest(TEST_COUNT)
+    fun instantiatePrivateConstructorWithoutInstantiate() {
+        class PrivateConstructorObject private constructor(val value: String)
+
+        val actual = SUT.giveMeOne<PrivateConstructorObject>()
+            .value
+
+        then(actual).isNotNull()
+    }
+
     @RepeatedTest(TEST_COUNT)
     fun instantiateDefaultArgumentConstructor() {
         class ConstructorObject(val value: String = "default")