diff --git a/sway/config/output.c b/sway/config/output.c
index 1b378078..cc3bf457 100644
--- a/sway/config/output.c
+++ b/sway/config/output.c
@@ -491,7 +491,7 @@ static void queue_output_config(struct output_config *oc,
 		wlr_output_state_set_scale(pending, scale);
 	}
 
-	if (oc && oc->adaptive_sync != -1) {
+	if (oc && oc->adaptive_sync != -1 && wlr_output->adaptive_sync_supported) {
 		sway_log(SWAY_DEBUG, "Set %s adaptive sync to %d", wlr_output->name,
 			oc->adaptive_sync);
 		wlr_output_state_set_adaptive_sync_enabled(pending, oc->adaptive_sync == 1);