try serial
diff --git a/kotlin-native/runtime/src/main/cpp/CompilerConstants.cpp b/kotlin-native/runtime/src/main/cpp/CompilerConstants.cpp
index dbe578d..17db3d0 100644
--- a/kotlin-native/runtime/src/main/cpp/CompilerConstants.cpp
+++ b/kotlin-native/runtime/src/main/cpp/CompilerConstants.cpp
@@ -42,7 +42,7 @@
 }
 
 ALWAYS_INLINE uint32_t compiler::auxGCThreads() noexcept {
-    return Kotlin_auxGCThreads;
+    return 0;//Kotlin_auxGCThreads;
 }
 
 ALWAYS_INLINE compiler::WorkerExceptionHandling compiler::workerExceptionHandling() noexcept {
diff --git a/kotlin-native/runtime/src/main/cpp/CompilerConstants.hpp b/kotlin-native/runtime/src/main/cpp/CompilerConstants.hpp
index c845d37..9dd84dd 100644
--- a/kotlin-native/runtime/src/main/cpp/CompilerConstants.hpp
+++ b/kotlin-native/runtime/src/main/cpp/CompilerConstants.hpp
@@ -113,7 +113,7 @@
 }
 
 ALWAYS_INLINE inline bool gcMarkSingleThreaded() noexcept {
-    return Kotlin_gcMarkSingleThreaded != 0;
+    return true;//Kotlin_gcMarkSingleThreaded != 0;
 }