diff --git a/crypto/threads_win.c b/crypto/threads_win.c
index 5a14872d1ca784c74ca7aa8e805e99356af7e98e..63647a39a673dc37e3ab0bd513b82d4cb6331934 100644
--- a/crypto/threads_win.c
+++ b/crypto/threads_win.c
@@ -136,9 +136,9 @@ BOOL CALLBACK once_cb(PINIT_ONCE once, PVOID p, PVOID *pp)
 int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void))
 {
     if (InitOnceExecuteOnce(once, once_cb, init, NULL))
-        return 0;
+        return 1;
 
-    return 1;
+    return 0;
 }
 
 # endif