diff --git a/code/vendors/flecs/flecs-os_api-stdcpp.cpp b/code/vendors/flecs/flecs-os_api-stdcpp.cpp
index 4445f47..c3f54de 100644
--- a/code/vendors/flecs/flecs-os_api-stdcpp.cpp
+++ b/code/vendors/flecs/flecs-os_api-stdcpp.cpp
@@ -5,6 +5,10 @@
 
 #include "flecs/flecs.h"
 
+#ifdef _WIN32
+#include <Windows.h>
+#endif
+
 static
 ecs_os_thread_t stdcpp_thread_new(
                                   ecs_os_thread_callback_t callback, 
@@ -32,8 +36,8 @@ int32_t stdcpp_ainc(int32_t *count) {
     value = __sync_add_and_fetch (count, 1);
     return value;
 #else
-    /* Unsupported */
-    abort();
+    (void)value;
+    return InterlockedIncrement(reinterpret_cast<long*>(count));
 #endif
 }
 
@@ -44,8 +48,8 @@ int32_t stdcpp_adec(int32_t *count) {
     value = __sync_sub_and_fetch (count, 1);
     return value;
 #else
-    /* Unsupported */
-    abort();
+    (void)value;
+    return InterlockedDecrement(reinterpret_cast<long*>(count));
 #endif
 }