diff --git a/attest/pcp_windows.go b/attest/pcp_windows.go
index f82245c..73d3d93 100644
--- a/attest/pcp_windows.go
+++ b/attest/pcp_windows.go
@@ -395,7 +395,7 @@ func (h *winPCP) EKCerts() ([]*x509.Certificate, error) {
 	// Reading the certificate from the system store has failed.
 	// Lets try reading the raw bytes directly from NVRAM intead.
 	if len(c) == 0 {
-		buf, err = getNCryptBufferProperty(h.hProv, "PCP_EKNVCERT")
+		buf, err := getNCryptBufferProperty(h.hProv, "PCP_EKNVCERT")
 		if err != nil {
 			return nil, fmt.Errorf("Failed to read PCP_EKNVCERT: %v", err)
 		}