diff --git a/packages/session-ui/component-tests/tool-group.spec.ts b/packages/session-ui/component-tests/tool-group.spec.ts
index e924f34d1e2..13eaf94a694 100644
--- a/packages/session-ui/component-tests/tool-group.spec.ts
+++ b/packages/session-ui/component-tests/tool-group.spec.ts
@@ -74,6 +74,12 @@ story("summarizes subagents as Agent while retaining their card titles", async (
   await expect(
     group.locator('[data-component="context-tool-group-trigger"] [data-slot="basic-tool-tool-title"]'),
   ).toHaveText("4 Shell, Read, Agent")
+  const gap = await group.evaluate((element) => {
+    const title = element.querySelector('[data-component="context-tool-group-trigger"]')!.getBoundingClientRect()
+    const arrow = element.querySelector('[data-slot="collapsible-arrow-icon"]')!.getBoundingClientRect()
+    return arrow.left - title.right
+  })
+  expect(gap).toBeLessThanOrEqual(8)
   await expect(group.locator('[data-component="task-tool-title"]')).toHaveText(["General", "Explore"])
 })
 
diff --git a/packages/session-ui/src/components/basic-tool.css b/packages/session-ui/src/components/basic-tool.css
index 3f21d380ebb..04b89d063e5 100644
--- a/packages/session-ui/src/components/basic-tool.css
+++ b/packages/session-ui/src/components/basic-tool.css
@@ -173,6 +173,10 @@
 [data-component="collapsible"].tool-collapsible[data-compact="true"] > [data-slot="collapsible-trigger"] {
   height: 28px;
 
+  [data-slot="collapsible-arrow"] {
+    width: 16px;
+  }
+
   [data-component="tool-trigger"],
   [data-slot="basic-tool-tool-info-main"] {
     gap: 6px;