diff --git a/web_src/js/components/ActionRunStatus.vue b/web_src/js/components/ActionRunStatus.vue
index 96c6c441be..487d2460cc 100644
--- a/web_src/js/components/ActionRunStatus.vue
+++ b/web_src/js/components/ActionRunStatus.vue
@@ -19,12 +19,12 @@ withDefaults(defineProps<{
 
 <template>
   <span :data-tooltip-content="localeStatus ?? status" v-if="status">
-    <SvgIcon name="octicon-check-circle-fill" class="text green" :size="size" :class-name="className" v-if="status === 'success'"/>
-    <SvgIcon name="octicon-skip" class="text grey" :size="size" :class-name="className" v-else-if="status === 'skipped'"/>
-    <SvgIcon name="octicon-stop" class="text yellow" :size="size" :class-name="className" v-else-if="status === 'cancelled'"/>
-    <SvgIcon name="octicon-clock" class="text yellow" :size="size" :class-name="className" v-else-if="status === 'waiting'"/>
-    <SvgIcon name="octicon-blocked" class="text yellow" :size="size" :class-name="className" v-else-if="status === 'blocked'"/>
-    <SvgIcon name="octicon-meter" class="text yellow" :size="size" :class-name="'job-status-rotate ' + className" v-else-if="status === 'running'"/>
+    <SvgIcon name="octicon-check-circle-fill" class="text green" :size="size" :class="className" v-if="status === 'success'"/>
+    <SvgIcon name="octicon-skip" class="text grey" :size="size" :class="className" v-else-if="status === 'skipped'"/>
+    <SvgIcon name="octicon-stop" class="text yellow" :size="size" :class="className" v-else-if="status === 'cancelled'"/>
+    <SvgIcon name="octicon-clock" class="text yellow" :size="size" :class="className" v-else-if="status === 'waiting'"/>
+    <SvgIcon name="octicon-blocked" class="text yellow" :size="size" :class="className" v-else-if="status === 'blocked'"/>
+    <SvgIcon name="octicon-meter" class="text yellow" :size="size" :class="'job-status-rotate ' + className" v-else-if="status === 'running'"/>
     <SvgIcon name="octicon-x-circle-fill" class="text red" :size="size" v-else/><!-- failure, unknown -->
   </span>
 </template>
diff --git a/web_src/js/components/DashboardRepoList.vue b/web_src/js/components/DashboardRepoList.vue
index 876292fc94..14b7f0dec8 100644
--- a/web_src/js/components/DashboardRepoList.vue
+++ b/web_src/js/components/DashboardRepoList.vue
@@ -367,7 +367,7 @@ export default defineComponent({
                       otherwise if the "input" handles click event for intermediate status, it breaks the internal state-->
                   <input type="checkbox" class="tw-pointer-events-none" v-bind.prop="checkboxArchivedFilterProps">
                   <label>
-                    <svg-icon name="octicon-archive" :size="16" class-name="tw-mr-1"/>
+                    <svg-icon name="octicon-archive" :size="16" class="tw-mr-1"/>
                     {{ textShowArchived }}
                   </label>
                 </div>
@@ -376,7 +376,7 @@ export default defineComponent({
                 <div class="ui checkbox" ref="checkboxPrivateFilter" :title="checkboxPrivateFilterTitle">
                   <input type="checkbox" class="tw-pointer-events-none" v-bind.prop="checkboxPrivateFilterProps">
                   <label>
-                    <svg-icon name="octicon-lock" :size="16" class-name="tw-mr-1"/>
+                    <svg-icon name="octicon-lock" :size="16" class="tw-mr-1"/>
                     {{ textShowPrivate }}
                   </label>
                 </div>
@@ -413,7 +413,7 @@ export default defineComponent({
         <ul class="repo-owner-name-list">
           <li class="tw-flex tw-items-center tw-py-2" v-for="repo, index in repos" :class="{'active': index === activeIndex}" :key="repo.id">
             <a class="repo-list-link muted" :href="repo.link">
-              <svg-icon :name="repoIcon(repo)" :size="16" class-name="repo-list-icon"/>
+              <svg-icon :name="repoIcon(repo)" :size="16" class="repo-list-icon"/>
               <div class="text truncate">{{ repo.full_name }}</div>
               <div v-if="repo.archived">
                 <svg-icon name="octicon-archive" :size="16"/>
@@ -421,7 +421,7 @@ export default defineComponent({
             </a>
             <a class="tw-flex tw-items-center" v-if="repo.latest_commit_status_state" :href="repo.latest_commit_status_state_link" :data-tooltip-content="repo.locale_latest_commit_status_state">
               <!-- the commit status icon logic is taken from templates/repo/commit_status.tmpl -->
-              <svg-icon :name="statusIcon(repo.latest_commit_status_state)" :class-name="'tw-ml-2 commit-status icon text ' + statusColor(repo.latest_commit_status_state)" :size="16"/>
+              <svg-icon :name="statusIcon(repo.latest_commit_status_state)" :class="'tw-ml-2 commit-status icon text ' + statusColor(repo.latest_commit_status_state)" :size="16"/>
             </a>
           </li>
         </ul>
@@ -432,7 +432,7 @@ export default defineComponent({
               class="item navigation tw-py-1" :class="{'disabled': page === 1}"
               @click="changePage(1)" :title="textFirstPage"
             >
-              <svg-icon name="gitea-double-chevron-left" :size="16" class-name="tw-mr-1"/>
+              <svg-icon name="gitea-double-chevron-left" :size="16" class="tw-mr-1"/>
             </a>
             <a
               class="item navigation tw-py-1" :class="{'disabled': page === 1}"
@@ -445,13 +445,13 @@ export default defineComponent({
               class="item navigation" :class="{'disabled': page === finalPage}"
               @click="changePage(page + 1)" :title="textNextPage"
             >
-              <svg-icon name="octicon-chevron-right" :size="16" class-name="tw-ml-1"/>
+              <svg-icon name="octicon-chevron-right" :size="16" class="tw-ml-1"/>
             </a>
             <a
               class="item navigation tw-py-1" :class="{'disabled': page === finalPage}"
               @click="changePage(finalPage)" :title="textLastPage"
             >
-              <svg-icon name="gitea-double-chevron-right" :size="16" class-name="tw-ml-1"/>
+              <svg-icon name="gitea-double-chevron-right" :size="16" class="tw-ml-1"/>
             </a>
           </div>
         </div>
@@ -471,7 +471,7 @@ export default defineComponent({
         <ul class="repo-owner-name-list">
           <li class="tw-flex tw-items-center tw-py-2" v-for="org in organizations" :key="org.name">
             <a class="repo-list-link muted" :href="subUrl + '/' + encodeURIComponent(org.name)">
-              <svg-icon name="octicon-organization" :size="16" class-name="repo-list-icon"/>
+              <svg-icon name="octicon-organization" :size="16" class="repo-list-icon"/>
               <div class="text truncate">{{ org.full_name ? `${org.full_name} (${org.name})` : org.name }}</div>
               <div><!-- div to prevent underline of label on hover -->
                 <span class="ui tiny basic label" v-if="org.org_visibility !== 'public'">
@@ -481,7 +481,7 @@ export default defineComponent({
             </a>
             <div class="text light grey tw-flex tw-items-center tw-ml-2">
               {{ org.num_repos }}
-              <svg-icon name="octicon-repo" :size="16" class-name="tw-ml-1 tw-mt-0.5"/>
+              <svg-icon name="octicon-repo" :size="16" class="tw-ml-1 tw-mt-0.5"/>
             </div>
           </li>
         </ul>
diff --git a/web_src/js/components/RepoBranchTagSelector.vue b/web_src/js/components/RepoBranchTagSelector.vue
index fa5c75af99..820e69d9ab 100644
--- a/web_src/js/components/RepoBranchTagSelector.vue
+++ b/web_src/js/components/RepoBranchTagSelector.vue
@@ -226,7 +226,7 @@ export default defineComponent({
           <strong ref="dropdownRefName" class="tw-ml-2 tw-inline-block gt-ellipsis">{{ currentRefShortName }}</strong>
         </template>
       </span>
-      <svg-icon name="octicon-triangle-down" :size="14" class-name="dropdown icon"/>
+      <svg-icon name="octicon-triangle-down" :size="14" class="dropdown icon"/>
     </div>
     <div class="menu transition" :class="{visible: menuVisible}" v-show="menuVisible" v-cloak>
       <div class="ui icon search input">
@@ -235,10 +235,10 @@ export default defineComponent({
       </div>
       <div v-if="showTabBranches" class="branch-tag-tab">
         <a class="branch-tag-item muted" :class="{active: selectedTab === 'branches'}" href="#" @click="handleTabSwitch('branches')">
-          <svg-icon name="octicon-git-branch" :size="16" class-name="tw-mr-1"/>{{ textBranches }}
+          <svg-icon name="octicon-git-branch" :size="16" class="tw-mr-1"/>{{ textBranches }}
         </a>
         <a v-if="showTabTags" class="branch-tag-item muted" :class="{active: selectedTab === 'tags'}" href="#" @click="handleTabSwitch('tags')">
-          <svg-icon name="octicon-tag" :size="16" class-name="tw-mr-1"/>{{ textTags }}
+          <svg-icon name="octicon-tag" :size="16" class="tw-mr-1"/>{{ textTags }}
         </a>
       </div>
       <div class="branch-tag-divider"/>
diff --git a/web_src/js/svg.test.ts b/web_src/js/svg.test.ts
index 7f3e0496ec..715b739a82 100644
--- a/web_src/js/svg.test.ts
+++ b/web_src/js/svg.test.ts
@@ -16,12 +16,11 @@ test('svgParseOuterInner', () => {
 
 test('SvgIcon', () => {
   const root = document.createElement('div');
-  createApp({render: () => h(SvgIcon, {name: 'octicon-link', size: 24, class: 'base', className: 'extra'})}).mount(root);
+  createApp({render: () => h(SvgIcon, {name: 'octicon-link', size: 24, class: 'base'})}).mount(root);
   const node = root.firstChild as Element;
   expect(node.nodeName).toEqual('svg');
   expect(node.getAttribute('width')).toEqual('24');
   expect(node.getAttribute('height')).toEqual('24');
   expect(node.classList.contains('octicon-link')).toBeTruthy();
   expect(node.classList.contains('base')).toBeTruthy();
-  expect(node.classList.contains('extra')).toBeTruthy();
 });
diff --git a/web_src/js/svg.ts b/web_src/js/svg.ts
index b193afb255..8316cbcf85 100644
--- a/web_src/js/svg.ts
+++ b/web_src/js/svg.ts
@@ -201,7 +201,6 @@ export const SvgIcon = defineComponent({
   props: {
     name: {type: String as PropType<SvgName>, required: true},
     size: {type: Number, default: 16},
-    className: {type: String, default: ''},
     symbolId: {type: String},
   },
   render() {
@@ -216,15 +215,7 @@ export const SvgIcon = defineComponent({
     attrs[`^width`] = this.size;
     attrs[`^height`] = this.size;
 
-    // make the <SvgIcon class="foo" class-name="bar"> classes work together
-    const classes: Array<string> = [];
-    for (const cls of svgOuter.classList) {
-      classes.push(cls);
-    }
-    // TODO: drop the `className/class-name` prop in the future, only use "class" prop
-    if (this.className) {
-      classes.push(...this.className.split(/\s+/).filter(Boolean));
-    }
+    const classes = Array.from(svgOuter.classList);
     if (this.symbolId) {
       classes.push('tw-hidden', 'svg-symbol-container');
       svgInnerHtml = `<symbol id="${this.symbolId}" viewBox="${attrs['^viewBox']}">${svgInnerHtml}</symbol>`;