diff --git a/Python/bootstrap_hash.c b/Python/bootstrap_hash.c
index 43f5264..eb2b6d0 100644
--- a/Python/bootstrap_hash.c
+++ b/Python/bootstrap_hash.c
@@ -38,8 +38,8 @@
 win32_urandom_init(int raise)
 {
     /* Acquire context */
-    if (!CryptAcquireContext(&hCryptProv, NULL, NULL,
-                             PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
+    if (!CryptAcquireContextW(&hCryptProv, NULL, NULL,
+                              PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
         goto error;
 
     return 0;