diff --git a/tests/qemuagenttest.c b/tests/qemuagenttest.c
index cef9ae5fee14732205857902b74e0262e74e2a5d..ae55086d17d27a8a631aa16db85f89da9068563d 100644
--- a/tests/qemuagenttest.c
+++ b/tests/qemuagenttest.c
@@ -1127,7 +1127,9 @@ checkUserInfo(virTypedParameterPtr params,
 
     snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH,
              "user.%zu.domain", nth);
-    virTypedParamsGetString(params, nparams, param_name, &domain);
+    if (virTypedParamsGetString(params, nparams, param_name, &domain) < 0)
+        return -1;
+
     if (STRNEQ_NULLABLE(expDomain, domain)) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        "Expected domain '%s', got '%s'",