2 files changed, 6 insertions, 1 deletions
diff --git a/src/platform/windows/win_impl.h b/src/platform/windows/win_impl.h
index 9de47ce4..c6a68142 100644
--- a/src/platform/windows/win_impl.h
+++ b/src/platform/windows/win_impl.h
@@ -60,6 +60,7 @@ struct nni_plat_thr {
 struct nni_plat_mtx {
 	CRITICAL_SECTION	cs;
 	DWORD			owner;
+	int			init;
 };
 
 struct nni_plat_cv {
diff --git a/src/platform/windows/win_thread.c b/src/platform/windows/win_thread.c
index e2568626..1b903b26 100644
--- a/src/platform/windows/win_thread.c
+++ b/src/platform/windows/win_thread.c
@@ -35,6 +35,7 @@ int
 nni_plat_mtx_init(nni_plat_mtx *mtx)
 {
 	InitializeCriticalSection(&mtx->cs);
+	mtx->init = 1;
 	return (0);
 }
 
@@ -42,7 +43,10 @@ nni_plat_mtx_init(nni_plat_mtx *mtx)
 void
 nni_plat_mtx_fini(nni_plat_mtx *mtx)
 {
-	DeleteCriticalSection(&mtx->cs);
+	if (mtx->init) {
+		DeleteCriticalSection(&mtx->cs);
+		mtx->init = 0;
+	}
 }