diff --git a/lib/secure-streams/policy-json.c b/lib/secure-streams/policy-json.c
index 3e828d89a..dc0b64393 100644
--- a/lib/secure-streams/policy-json.c
+++ b/lib/secure-streams/policy-json.c
@@ -566,7 +566,7 @@ lws_ss_policy_parser_cb(struct lejp_ctx *ctx, char reason)
 		goto string2;
 
 	case LSSPPT_METRICS_US_SCHEDULE:
-		a->curr[LTY_METRICS].m->us_schedule = (uint64_t)atol(ctx->buf);
+		a->curr[LTY_METRICS].m->us_schedule = (uint64_t)atoll(ctx->buf);
 		break;
 
 	case LSSPPT_METRICS_US_HALFLIFE: