diff --git a/src/views/trials/trials-panel/trial-summary/trial-document/components/uploadFiles.vue b/src/views/trials/trials-panel/trial-summary/trial-document/components/uploadFiles.vue
index 1c294582..088538f3 100644
--- a/src/views/trials/trials-panel/trial-summary/trial-document/components/uploadFiles.vue
+++ b/src/views/trials/trials-panel/trial-summary/trial-document/components/uploadFiles.vue
@@ -14,6 +14,7 @@
             class="upload"
             style="margin-right: 10px"
             :disabled="limitLength"
+            v-if="!limitLength"
           >
             <input
               multiple="multiple"
@@ -25,7 +26,11 @@
               class="select-file"
               title=""
               @change="beginScanFiles($event)"
-              v-if="!loading && (!limitLength || fileList.length < limitLength)"
+              v-if="
+                !loading &&
+                (!limitLength ||
+                  (fileList.length < limitLength && limitLength > 1))
+              "
             />
             <div class="btn-select">
               {{ $t('trials:trialDocument:button:selectFolder') }}