diff --git a/src/windows/acceleratedcryptographichash_cng.cpp b/src/windows/acceleratedcryptographichash_cng.cpp
index 77e73b6..35f5161 100644
--- a/src/windows/acceleratedcryptographichash_cng.cpp
+++ b/src/windows/acceleratedcryptographichash_cng.cpp
@@ -16,7 +16,7 @@
 
 struct AcceleratedCryptographicHash::impl {
     explicit impl(QCryptographicHash::Algorithm algo) {
-        if (method != QCryptographicHash::Sha256)
+        if (algo != QCryptographicHash::Sha256)
             throw std::runtime_error("Only sha256 implemented");
 
         //open an algorithm handle