diff --git a/mm/damon/core.c b/mm/damon/core.c
index c1e0fed4e877..5ce8d7c867f0 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -1019,12 +1019,15 @@ static int kdamond_wait_activation(struct damon_ctx *ctx)
 	struct damos *s;
 	unsigned long wait_time;
 	unsigned long min_wait_time = 0;
+	bool init_wait_time = false;
 
 	while (!kdamond_need_stop(ctx)) {
 		damon_for_each_scheme(s, ctx) {
 			wait_time = damos_wmark_wait_us(s);
-			if (!min_wait_time || wait_time < min_wait_time)
+			if (!init_wait_time || wait_time < min_wait_time) {
+				init_wait_time = true;
 				min_wait_time = wait_time;
+			}
 		}
 		if (!min_wait_time)
 			return 0;