diff --git a/dlls/wininet/cookie.c b/dlls/wininet/cookie.c
index 31a0e19d0f3..f5f39755bbb 100644
--- a/dlls/wininet/cookie.c
+++ b/dlls/wininet/cookie.c
@@ -184,6 +184,10 @@ static void COOKIE_crackUrlSimple(LPCWSTR lpszUrl, LPWSTR hostName, int hostName
     UrlComponents.lpszUrlPath = path;
     UrlComponents.lpszUserName = NULL;
     UrlComponents.lpszHostName = hostName;
+    UrlComponents.dwExtraInfoLength = 0;
+    UrlComponents.dwPasswordLength = 0;
+    UrlComponents.dwSchemeLength = 0;
+    UrlComponents.dwUserNameLength = 0;
     UrlComponents.dwHostNameLength = hostNameLen;
     UrlComponents.dwUrlPathLength = pathLen;