diff --git a/qga/main.c b/qga/main.c
index 9939a2b623..7e1e438f67 100644
--- a/qga/main.c
+++ b/qga/main.c
@@ -211,7 +211,7 @@ static void usage(const char *cmd)
 "  -V, --version     print version information and exit\n"
 "  -d, --daemonize   become a daemon\n"
 #ifdef _WIN32
-"  -s, --service     service commands: install, uninstall\n"
+"  -s, --service     service commands: install, uninstall, vss-install, vss-uninstall\n"
 #endif
 "  -b, --blacklist   comma-separated list of RPCs to disable (no spaces, \"?\"\n"
 "                    to list available RPCs)\n"
@@ -1036,6 +1036,14 @@ int main(int argc, char **argv)
             } else if (strcmp(service, "uninstall") == 0) {
                 ga_uninstall_vss_provider();
                 return ga_uninstall_service();
+            } else if (strcmp(service, "vss-install") == 0) {
+                if (ga_install_vss_provider()) {
+                    return EXIT_FAILURE;
+                }
+                return EXIT_SUCCESS;
+            } else if (strcmp(service, "vss-uninstall") == 0) {
+                ga_uninstall_vss_provider();
+                return EXIT_SUCCESS;
             } else {
                 printf("Unknown service command.\n");
                 return EXIT_FAILURE;