diff --git a/src/components/Loading/src/Loading.vue b/src/components/Loading/src/Loading.vue
index fa7c7bd2..83075b67 100644
--- a/src/components/Loading/src/Loading.vue
+++ b/src/components/Loading/src/Loading.vue
@@ -25,7 +25,7 @@ defineProps({
   <section
     v-show="loading"
     class="full-loading"
-    :class="{ absolute, [theme]: !!theme }"
+    :class="{ absolute, [`${theme}`]: !!theme }"
     :style="[background ? `background-color: ${background}` : '']"
   >
     <Spin v-bind="$attrs" :tip="tip" :size="size" :spinning="loading" />
diff --git a/src/components/Preview/src/typing.ts b/src/components/Preview/src/typing.ts
index 882e1443..73cc28a2 100644
--- a/src/components/Preview/src/typing.ts
+++ b/src/components/Preview/src/typing.ts
@@ -12,8 +12,8 @@ export interface Options {
   defaultWidth?: number
   maskClosable?: boolean
   rememberState?: boolean
-  onImgLoad?: (img: onImgLoadType) => void
-  onImgError?: (img: onImgLoadType) => void
+  onImgLoad?: (params: onImgLoadType) => void
+  onImgError?: (params: onImgLoadType) => void
 }
 
 export interface Props {