diff --git a/services/apphilogcat/hiview_applogcat.c b/services/apphilogcat/hiview_applogcat.c
index 7b64444d9d95f4f87c97d5bb17d22c8b513a8fec..3a2da5eb1cac66bd5801e088ecb27c91545cb53b 100644
--- a/services/apphilogcat/hiview_applogcat.c
+++ b/services/apphilogcat/hiview_applogcat.c
@@ -189,7 +189,7 @@ int main(int argc, char *argv[])
     while (1) {
         (void)memset_s(buf, HILOG_LOGBUFFER + 1, 0, HILOG_LOGBUFFER + 1);
         ret = read(fd, buf, HILOG_LOGBUFFER);
-        if (ret < 0 || ret < sizeof(struct HiLogEntry)) {
+        if (ret < (int)(sizeof(struct HiLogEntry))) {
             continue;
         }
         struct HiLogEntry *head = (struct HiLogEntry *)buf;