diff --git a/NetSSL_Win/src/Context.cpp b/NetSSL_Win/src/Context.cpp
index c9ff25a63..dcb44d3c9 100644
--- a/NetSSL_Win/src/Context.cpp
+++ b/NetSSL_Win/src/Context.cpp
@@ -167,7 +167,7 @@ void Context::loadCertificate()
 	if (!_hCertStore)
 	{
 		if (_options & OPT_USE_MACHINE_STORE)
-			_hCertStore = CertOpenStore(CERT_STORE_PROV_SYSTEM, 0, 0, CERT_SYSTEM_STORE_LOCAL_MACHINE, _certStoreName.c_str());
+			_hCertStore = CertOpenStore(CERT_STORE_PROV_SYSTEM, 0, 0, CERT_SYSTEM_STORE_LOCAL_MACHINE, wcertStoreName.c_str());
 		else
 			_hCertStore = CertOpenSystemStoreW(0, wcertStore.c_str());
 	}
diff --git a/NetSSL_Win/src/X509Certificate.cpp b/NetSSL_Win/src/X509Certificate.cpp
index bb8f5166f..60a99d87d 100644
--- a/NetSSL_Win/src/X509Certificate.cpp
+++ b/NetSSL_Win/src/X509Certificate.cpp
@@ -366,7 +366,7 @@ void X509Certificate::loadCertificate(const std::string& certName, const std::st
 	Poco::UnicodeConverter::convert(certStoreName, wcertStore);
 	HCERTSTORE hCertStore;
 	if (useMachineStore)
-		hCertStore = CertOpenStore(CERT_STORE_PROV_SYSTEM, 0, 0, CERT_SYSTEM_STORE_LOCAL_MACHINE, certStoreName.c_str());
+		hCertStore = CertOpenStore(CERT_STORE_PROV_SYSTEM, 0, 0, CERT_SYSTEM_STORE_LOCAL_MACHINE, wcertStoreName.c_str());
 	else
 		hCertStore = CertOpenSystemStoreW(0, wcertStore.c_str());