diff --git a/src/health.ts b/src/health.ts
index 15e85e0..37478b8 100644
--- a/src/health.ts
+++ b/src/health.ts
@@ -33,8 +33,9 @@ export async function health() {
                         exitNames.push(currentCourse.kcmc)
                     }
                 } else {
-                    totalAcquireCount += parseInt(lastCourse.syrs) - parseInt(currentCourse.syrs)
-                    if (!acquireNames.includes(currentCourse.kcmc)) {
+                    let num = parseInt(lastCourse.syrs) - parseInt(currentCourse.syrs)
+                    totalAcquireCount += num
+                    if (!acquireNames.includes(currentCourse.kcmc) && num > 0) {
                         acquireNames.push(currentCourse.kcmc)
                     }
                 }