diff --git a/src/classpath-android.cpp b/src/classpath-android.cpp
index 59d7bf3456..21e4cb6a6b 100644
--- a/src/classpath-android.cpp
+++ b/src/classpath-android.cpp
@@ -2300,6 +2300,13 @@ Avian_java_lang_System_mapLibraryName
                 t->m->system->librarySuffix()));
 }
 
+extern "C" AVIAN_EXPORT int64_t JNICALL
+Avian_java_util_concurrent_atomic_AtomicLong_VMSupportsCS8
+(Thread*, object, uintptr_t*)
+{
+  return true;
+}
+
 #ifdef PLATFORM_WINDOWS
 
 #  include <io.h>