diff --git a/apps/web/src/components/BranchToolbar.tsx b/apps/web/src/components/BranchToolbar.tsx
index 8e84ec5d1ed9e8c09106191d3e7f6f13f059ac5c..912ee901eec8749292b66ff260554faf5c0c0f1a 100644
--- a/apps/web/src/components/BranchToolbar.tsx
+++ b/apps/web/src/components/BranchToolbar.tsx
@@ -5,7 +5,6 @@ import {
   FolderGit2Icon,
   FolderGitIcon,
   FolderIcon,
-  HistoryIcon,
   ScaleIcon,
 } from "lucide-react";
 import {
@@ -41,6 +40,7 @@ import {
 } from "./BranchToolbarBranchSelector";
 import { BranchToolbarEnvironmentSelector } from "./BranchToolbarEnvironmentSelector";
 import { BranchToolbarEnvModeSelector } from "./BranchToolbarEnvModeSelector";
+import { PreviousWorktreeItemContent } from "./PreviousWorktreeItemContent";
 import { ComposerControl } from "./chat/ComposerControl";
 import {
   Menu,
@@ -105,6 +105,7 @@ interface MobileRunContextSelectorProps {
   activeWorktreePath: string | null;
   onEnvModeChange: (mode: EnvMode) => void;
   previousWorktreeLabel: string | null;
+  previousWorktreeBranch: string | null;
   onUsePreviousWorktree: () => void;
 }
 
@@ -123,6 +124,7 @@ const MobileRunContextSelector = memo(function MobileRunContextSelector({
   activeWorktreePath,
   onEnvModeChange,
   previousWorktreeLabel,
+  previousWorktreeBranch,
   onUsePreviousWorktree,
 }: MobileRunContextSelectorProps) {
   const composerFloatingLayerProps = useComposerMenuProps();
@@ -217,7 +219,12 @@ const MobileRunContextSelector = memo(function MobileRunContextSelector({
         {triggerContent}
         <ChevronDownIcon className="size-3 shrink-0 opacity-50" />
       </MenuTrigger>
-      <MenuPopup align="start" side="top" {...composerFloatingLayerProps}>
+      <MenuPopup
+        align="start"
+        side="top"
+        className={previousWorktreeLabel ? "w-[min(21rem,calc(100vw-2rem))]" : undefined}
+        {...composerFloatingLayerProps}
+      >
         {showEnvironmentPicker && availableEnvironments && onEnvironmentChange ? (
           <>
             <MenuGroup>
@@ -295,10 +302,7 @@ const MobileRunContextSelector = memo(function MobileRunContextSelector({
             </MenuRadioItem>
             {previousWorktreeLabel ? (
               <MenuRadioItem disabled={envModeLocked} value="previous-worktree" closeOnClick>
-                <span className="flex min-w-0 items-center gap-1.5">
-                  <HistoryIcon className="size-3" />
-                  <MiddleTruncate value={previousWorktreeLabel} />
-                </span>
+                <PreviousWorktreeItemContent branch={previousWorktreeBranch} />
               </MenuRadioItem>
             ) : null}
           </MenuRadioGroup>
@@ -630,6 +634,7 @@ export const BranchToolbar = memo(function BranchToolbar({
             activeWorktreePath={activeWorktreePath}
             onEnvModeChange={onEnvModeChange}
             previousWorktreeLabel={previousWorktreeLabel}
+            previousWorktreeBranch={previousWorktreeSeed?.branch ?? null}
             onUsePreviousWorktree={onUsePreviousWorktree}
           />
         </div>
@@ -669,6 +674,7 @@ export const BranchToolbar = memo(function BranchToolbar({
               activeWorktreePath={activeWorktreePath}
               onEnvModeChange={onEnvModeChange}
               previousWorktreeLabel={previousWorktreeLabel}
+              previousWorktreeBranch={previousWorktreeSeed?.branch ?? null}
               onUsePreviousWorktree={onUsePreviousWorktree}
             />
           ) : null}
diff --git a/apps/web/src/components/BranchToolbarEnvModeSelector.tsx b/apps/web/src/components/BranchToolbarEnvModeSelector.tsx
index 1b8b81cfcd74d2fafa81fd48e2acbf8c91a851b9..cb1faef9a50d282a01f85704d6c8de406b03d0e4 100644
--- a/apps/web/src/components/BranchToolbarEnvModeSelector.tsx
+++ b/apps/web/src/components/BranchToolbarEnvModeSelector.tsx
@@ -1,4 +1,4 @@
-import { FolderGit2Icon, FolderGitIcon, FolderIcon, HistoryIcon } from "lucide-react";
+import { FolderGit2Icon, FolderGitIcon, FolderIcon } from "lucide-react";
 import { memo, useMemo } from "react";
 
 import {
@@ -8,6 +8,7 @@ import {
   type EnvMode,
 } from "./BranchToolbar.logic";
 import { useComposerMenuProps } from "./chat/composerEventScope";
+import { PreviousWorktreeItemContent } from "./PreviousWorktreeItemContent";
 import {
   Select,
   SelectGroup,
@@ -28,6 +29,7 @@ interface BranchToolbarEnvModeSelectorProps {
   activeWorktreePath: string | null;
   onEnvModeChange: (mode: EnvMode) => void;
   previousWorktreeLabel?: string | null;
+  previousWorktreeBranch?: string | null;
   onUsePreviousWorktree?: () => void;
 }
 
@@ -38,6 +40,7 @@ export const BranchToolbarEnvModeSelector = memo(function BranchToolbarEnvModeSe
   activeWorktreePath,
   onEnvModeChange,
   previousWorktreeLabel,
+  previousWorktreeBranch = null,
   onUsePreviousWorktree,
 }: BranchToolbarEnvModeSelectorProps) {
   const composerFloatingLayerProps = useComposerMenuProps();
@@ -142,7 +145,11 @@ export const BranchToolbarEnvModeSelector = memo(function BranchToolbarEnvModeSe
             : resolveCurrentWorkspaceLabel(activeWorktreePath)}
         </TooltipPopup>
       </Tooltip>
-      <SelectPopup alignItemWithTrigger={false} {...composerFloatingLayerProps}>
+      <SelectPopup
+        alignItemWithTrigger={false}
+        className={showPreviousWorktree ? "w-[min(21rem,calc(100vw-2rem))]" : undefined}
+        {...composerFloatingLayerProps}
+      >
         <SelectGroup>
           <SelectGroupLabel>Workspace</SelectGroupLabel>
           <SelectItem value="local">
@@ -163,10 +170,7 @@ export const BranchToolbarEnvModeSelector = memo(function BranchToolbarEnvModeSe
           </SelectItem>
           {showPreviousWorktree && previousWorktreeLabel ? (
             <SelectItem value={PREVIOUS_WORKTREE_SELECT_VALUE}>
-              <span className="inline-flex items-center gap-1.5">
-                <HistoryIcon className="size-3" />
-                {previousWorktreeLabel}
-              </span>
+              <PreviousWorktreeItemContent branch={previousWorktreeBranch} />
             </SelectItem>
           ) : null}
         </SelectGroup>
diff --git a/apps/web/src/components/PreviousWorktreeItemContent.tsx b/apps/web/src/components/PreviousWorktreeItemContent.tsx
new file mode 100644
index 0000000000000000000000000000000000000000..cd25c8c497e24d153c971c17a9471b04a6384010
--- /dev/null
+++ b/apps/web/src/components/PreviousWorktreeItemContent.tsx
@@ -0,0 +1,19 @@
+import { HistoryIcon } from "lucide-react";
+
+import { MiddleTruncate } from "./ui/middle-truncate";
+
+export function PreviousWorktreeItemContent({ branch }: { branch: string | null }) {
+  return (
+    <span className="flex min-w-0 items-start gap-1.5">
+      <HistoryIcon className="mt-1 size-3" />
+      <span className="flex min-w-0 flex-col">
+        <span>Previous worktree</span>
+        {branch ? (
+          <span className="min-w-0 text-xs text-muted-foreground">
+            <MiddleTruncate value={branch} />
+          </span>
+        ) : null}
+      </span>
+    </span>
+  );
+}