diff --git a/src/rpc/virnettlscontext.c b/src/rpc/virnettlscontext.c
index 3e7e5e02cc4e5c06143d9f10690a0442c29eaf8b..6665268f3c2cf1eeebb45e915c001b766fa40093 100644
--- a/src/rpc/virnettlscontext.c
+++ b/src/rpc/virnettlscontext.c
@@ -217,8 +217,8 @@ static int virNetTLSContextCheckCertKeyUsage(gnutls_x509_crt_t cert,
                                              bool isCA)
 {
     int status;
-    unsigned int usage;
-    unsigned int critical;
+    unsigned int usage = 0;
+    unsigned int critical = 0;
 
     status = gnutls_x509_crt_get_key_usage(cert, &usage, &critical);