diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/CAdapterGenerator.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/CAdapterGenerator.kt
index 75dff7d1e38..7a42008931e 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/CAdapterGenerator.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/CAdapterGenerator.kt
@@ -911,7 +911,7 @@ internal class CAdapterGenerator(val context: Context) : DeclarationDescriptorVi
         |KObjHeader* DerefStablePointer(void*, KObjHeader**) RUNTIME_NOTHROW;
         |void* CreateStablePointer(KObjHeader*) RUNTIME_NOTHROW;
         |void DisposeStablePointer(void*) RUNTIME_NOTHROW;
-        |int IsInstance(const KObjHeader*, const KTypeInfo*) RUNTIME_NOTHROW;
+        |${prefix}_KBoolean IsInstance(const KObjHeader*, const KTypeInfo*) RUNTIME_NOTHROW;
         |void EnterFrame(KObjHeader** start, int parameters, int count) RUNTIME_NOTHROW;
         |void LeaveFrame(KObjHeader** start, int parameters, int count) RUNTIME_NOTHROW;
         |void Kotlin_initRuntimeIfNeeded();
diff --git a/backend.native/tests/build.gradle b/backend.native/tests/build.gradle
index 413aee2882f..3c2ce4608b7 100644
--- a/backend.native/tests/build.gradle
+++ b/backend.native/tests/build.gradle
@@ -3675,6 +3675,8 @@ dynamicTest("produce_dynamic") {
                 "singleton = I am single\n" +
                 "mutable = foo\n" +
                 "topLevel = 777 3\n" +
+                "IsInstance1 = PASS\n" +
+                "IsInstance2 = PASS\n" +
                 "getVector128 = (1, 2, 3, 4)\n" +
                 "Error handler: kotlin.Error: Expected error\n"
 }
diff --git a/backend.native/tests/produce_dynamic/simple/main.c b/backend.native/tests/produce_dynamic/simple/main.c
index ef07c9bc5bc..7ddbf5353aa 100644
--- a/backend.native/tests/produce_dynamic/simple/main.c
+++ b/backend.native/tests/produce_dynamic/simple/main.c
@@ -70,6 +70,9 @@ int main(void) {
 
     __ kotlin.root.testNullableWithNulls(nullableIntNull, nullableUnitNull);
 
+    printf("IsInstance1 = %s\n", __ IsInstance(singleton.pinned, __ kotlin.root.Singleton._type()) ? "PASS" : "FAIL");
+    printf("IsInstance2 = %s\n", !(__ IsInstance(singleton.pinned, __ kotlin.root.Codeable._type())) ? "PASS" : "FAIL");
+
     testVector128();
 
     __ DisposeStablePointer(singleton.pinned);