diff --git a/block/qed.c b/block/qed.c
index 3bd9db9..c130e42 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -650,19 +650,21 @@
     }
 
     if (!qed_is_cluster_size_valid(cluster_size)) {
-        fprintf(stderr, "QED cluster size must be within range [%u, %u] and power of 2\n",
-                QED_MIN_CLUSTER_SIZE, QED_MAX_CLUSTER_SIZE);
+        error_setg(errp, "QED cluster size must be within range [%u, %u] "
+                         "and power of 2",
+                   QED_MIN_CLUSTER_SIZE, QED_MAX_CLUSTER_SIZE);
         return -EINVAL;
     }
     if (!qed_is_table_size_valid(table_size)) {
-        fprintf(stderr, "QED table size must be within range [%u, %u] and power of 2\n",
-                QED_MIN_TABLE_SIZE, QED_MAX_TABLE_SIZE);
+        error_setg(errp, "QED table size must be within range [%u, %u] "
+                         "and power of 2",
+                   QED_MIN_TABLE_SIZE, QED_MAX_TABLE_SIZE);
         return -EINVAL;
     }
     if (!qed_is_image_size_valid(image_size, cluster_size, table_size)) {
-        fprintf(stderr, "QED image size must be a non-zero multiple of "
-                        "cluster size and less than %" PRIu64 " bytes\n",
-                qed_max_image_size(cluster_size, table_size));
+        error_setg(errp, "QED image size must be a non-zero multiple of "
+                         "cluster size and less than %" PRIu64 " bytes",
+                   qed_max_image_size(cluster_size, table_size));
         return -EINVAL;
     }