diff --git a/README.md b/README.md
index d08f843..435cee2 100644
--- a/README.md
+++ b/README.md
@@ -1488,8 +1488,10 @@ view would leave a wallet one click from deletion.
 - **Transitions**:
     - "Import" with a valid entry and a matching password of at least 12
       characters → creates the wallet, clears the navigation stack, and →
-      **Home**. The phrase and xprv modes then scan for further used addresses
-      and report the count as a flash message.
+      **Home**. When no address is active yet, as on the first wallet, the new
+      wallet's first address becomes the active one. The phrase and xprv modes
+      then scan for further used addresses and report the count as a flash
+      message.
     - "Import" with a missing, short or mismatched password → full-sentence
       error on the error line, no screen change
     - "Import" with an invalid entry or a duplicate wallet or address → flash
diff --git a/src/popup/views/addWallet.js b/src/popup/views/addWallet.js
index 660061a..e8a612d 100644
--- a/src/popup/views/addWallet.js
+++ b/src/popup/views/addWallet.js
@@ -194,6 +194,9 @@ async function importMnemonic(ctx) {
     };
     state.wallets.push(wallet);
     state.hasWallet = true;
+    if (state.activeAddress === null) {
+        state.activeAddress = firstAddress;
+    }
     await saveState();
     clearViewStack();
     ctx.renderWalletList();
@@ -254,6 +257,9 @@ async function importPrivateKey(ctx) {
         addresses: [{ address: addr, balance: "0.0000", tokenBalances: [] }],
     });
     state.hasWallet = true;
+    if (state.activeAddress === null) {
+        state.activeAddress = addr;
+    }
     await saveState();
     clearViewStack();
     ctx.renderWalletList();
@@ -315,6 +321,9 @@ async function importXprvKey(ctx) {
     };
     state.wallets.push(wallet);
     state.hasWallet = true;
+    if (state.activeAddress === null) {
+        state.activeAddress = firstAddress;
+    }
     await saveState();
     clearViewStack();
     ctx.renderWalletList();
diff --git a/tests/firstWalletActiveAddress.test.js b/tests/firstWalletActiveAddress.test.js
new file mode 100644
index 0000000..5a10e83
--- /dev/null
+++ b/tests/firstWalletActiveAddress.test.js
@@ -0,0 +1,69 @@
+// Adding the first wallet left no address active until the popup was reopened,
+// so Send and Receive on Home only said "No active address selected."
+// (https://git.eeqj.de/sneak/AutistMask/issues/512). Each test boots a fresh
+// install, adds the first wallet through one of the three import tabs, and
+// opens Receive from Home in the same popup.
+
+const { HDNodeWallet, Mnemonic, Wallet } = require("ethers");
+
+const { bootPopup, cleanupPopup } = require("./support/popupBoot");
+
+const PHRASE =
+    "abandon abandon abandon abandon abandon abandon " +
+    "abandon abandon abandon abandon abandon about";
+const PRIVATE_KEY = "0x" + "11".repeat(32);
+// The master key of PHRASE, so its first address is the phrase's.
+const XPRV = HDNodeWallet.fromSeed(
+    Mnemonic.fromPhrase(PHRASE).computeSeed(),
+).extendedKey;
+const PASSWORD = "correct horse battery staple";
+
+const PHRASE_ADDRESS = HDNodeWallet.fromPhrase(PHRASE).address;
+
+const TABS = [
+    {
+        tab: "tab-mnemonic",
+        field: "wallet-mnemonic",
+        secret: PHRASE,
+        address: PHRASE_ADDRESS,
+    },
+    {
+        tab: "tab-privkey",
+        field: "import-private-key",
+        secret: PRIVATE_KEY,
+        address: new Wallet(PRIVATE_KEY).address,
+    },
+    {
+        tab: "tab-xprv",
+        field: "import-xprv-key",
+        secret: XPRV,
+        address: PHRASE_ADDRESS,
+    },
+];
+
+afterEach(() => {
+    cleanupPopup();
+});
+
+describe("the first wallet's first address is active right away", () => {
+    test.each(TABS)(
+        "added from $tab, Receive opens on it",
+        async ({ tab, field, secret, address }) => {
+            const page = await bootPopup(undefined);
+            expect(page.pageErrors).toEqual([]);
+            await page.click("btn-welcome-add");
+            await page.click(tab);
+            page.node(field).value = secret;
+            page.node("add-wallet-password").value = PASSWORD;
+            page.node("add-wallet-password-confirm").value = PASSWORD;
+            await page.click("btn-add-wallet-confirm");
+            expect(page.visibleViews()).toEqual(["main"]);
+
+            await page.click("btn-main-receive");
+            expect(page.visibleViews()).toEqual(["receive"]);
+            expect(page.node("receive-address-block").dataset.full).toBe(
+                address,
+            );
+        },
+    );
+});
diff --git a/tests/support/popupBoot.js b/tests/support/popupBoot.js
index 308d0d4..06938cf 100644
--- a/tests/support/popupBoot.js
+++ b/tests/support/popupBoot.js
@@ -258,12 +258,17 @@ async function bootPopup(stored, options) {
         formatAddressTotal: () => "",
         getAddressValue: () => ({ usd: null, partial: false }),
     }));
+    // scanForAddresses() answers in the real one's shape, a scan that found
+    // no used address: AddWallet reads `addresses` from it.
     jest.doMock("../../src/shared/balances", () => ({
         fetchTokenBalances: jest.fn(async () => []),
         refreshBalances: jest.fn(async () => {}),
         lookupTokenInfo: jest.fn(async () => null),
         getProvider: () => ({}),
-        scanForAddresses: jest.fn(async () => []),
+        scanForAddresses: jest.fn(async () => ({
+            addresses: [],
+            nextIndex: 1,
+        })),
     }));
     // filterTransactions() answers in the real one's shape: Home,
     // AddressDetail and AddressToken read both fields, and a bare list makes