diff --git a/dlls/crypt32/protectdata.c b/dlls/crypt32/protectdata.c
index ea27978bfae..d5ec287c10c 100644
--- a/dlls/crypt32/protectdata.c
+++ b/dlls/crypt32/protectdata.c
@@ -49,8 +49,8 @@ WINE_DEFAULT_DEBUG_CHANNEL(crypt);
 #define CRYPT32_PROTECTDATA_PROV      PROV_RSA_FULL
 #define CRYPT32_PROTECTDATA_HASH_CALG CALG_SHA1
 #define CRYPT32_PROTECTDATA_HASH_LEN  160
-#define CRYPT32_PROTECTDATA_KEY_CALG  CALG_RC2
-#define CRYPT32_PROTECTDATA_KEY_LEN   40
+#define CRYPT32_PROTECTDATA_KEY_CALG  CALG_3DES
+#define CRYPT32_PROTECTDATA_KEY_LEN   168
 #define CRYPT32_PROTECTDATA_SALT_LEN  16
 
 static const BYTE crypt32_protectdata_secret[] = {