diff --git a/js/nostr/reactionEvents.js b/js/nostr/reactionEvents.js
index ac7a8dc5..22e957ed 100644
--- a/js/nostr/reactionEvents.js
+++ b/js/nostr/reactionEvents.js
@@ -173,17 +173,6 @@ export async function publishVideoReaction(
       ? pointer.relay.trim()
       : optionRelay;
 
-  const pointerTag =
-    pointer.type === "a"
-      ? pointerRelay
-        ? ["a", pointer.value, pointerRelay]
-        : ["a", pointer.value]
-      : pointerRelay
-      ? ["e", pointer.value, pointerRelay]
-      : ["e", pointer.value];
-
-  const pointerTags = [pointerTag];
-
   let pointerEventId = normalizeString(pointer.type === "e" ? pointer.value : "");
   if (!pointerEventId) {
     pointerEventId = extractEventIdFromPointerInput(pointerInput);
@@ -219,12 +208,33 @@ export async function publishVideoReaction(
     pointerEventRelay = pointerRelay;
   }
 
-  if (pointerEventId) {
-    if (pointerEventRelay) {
-      pointerTags.push(["e", pointerEventId, pointerEventRelay]);
-    } else {
-      pointerTags.push(["e", pointerEventId]);
-    }
+  if (!pointerEventId) {
+    const errorDetails = pointer.type === "a"
+      ? "Unable to resolve event id for address reaction target."
+      : "Unable to resolve event id for reaction target.";
+    devLogger.warn("[nostr] " + errorDetails, pointerInput);
+    return { ok: false, error: "missing-pointer-event-id", details: errorDetails };
+  }
+
+  const pointerTags = [];
+  let pointerTag = null;
+
+  if (pointer.type === "a") {
+    const addressTag = pointerRelay
+      ? ["a", pointer.value, pointerRelay]
+      : ["a", pointer.value];
+    pointerTags.push(addressTag);
+    pointerTag = addressTag;
+  }
+
+  const eventTag = pointerEventRelay
+    ? ["e", pointerEventId, pointerEventRelay]
+    : ["e", pointerEventId];
+
+  pointerTags.push(eventTag);
+
+  if (!pointerTag) {
+    pointerTag = eventTag;
   }
 
   const normalizedPointer = {
diff --git a/tests/nostr/reaction-events.test.mjs b/tests/nostr/reaction-events.test.mjs
new file mode 100644
index 00000000..8aea7e24
--- /dev/null
+++ b/tests/nostr/reaction-events.test.mjs
@@ -0,0 +1,125 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+const { publishVideoReaction } = await import("../../js/nostr/reactionEvents.js");
+
+function createReactionClient({ actorPubkey = "" } = {}) {
+  const publishCalls = [];
+  const pool = {
+    publish(urls, event) {
+      publishCalls.push({ urls, event });
+      return {
+        on(eventName, handler) {
+          if (eventName === "ok") {
+            handler();
+          }
+          return true;
+        },
+      };
+    },
+  };
+
+  const client = {
+    pubkey: actorPubkey,
+    relays: ["wss://relay.example"],
+    pool,
+    ensureExtensionPermissions: async () => ({ ok: true }),
+    async ensureSessionActor() {
+      if (!this.sessionActor) {
+        this.sessionActor = {
+          pubkey: actorPubkey,
+          privateKey: "session-private-key",
+        };
+      }
+      return actorPubkey;
+    },
+  };
+
+  if (actorPubkey) {
+    client.sessionActor = {
+      pubkey: actorPubkey,
+      privateKey: "session-private-key",
+    };
+  }
+
+  return { client, publishCalls };
+}
+
+const resolveActiveSignerStub = () => ({
+  signEvent: async (event) => ({
+    ...event,
+    id: `${event.kind}-${event.created_at}`,
+    sig: "active-signature",
+  }),
+});
+
+const shouldRequestExtensionPermissionsStub = () => false;
+
+const signEventWithPrivateKeyStub = (event) => ({
+  ...event,
+  id: `${event.kind}-${event.created_at}-session`,
+  sig: "session-signature",
+});
+
+test("publishVideoReaction includes both address and event tags when reacting to addressable content", async () => {
+  const actorPubkey = "0".repeat(64);
+  const { client, publishCalls } = createReactionClient({ actorPubkey });
+
+  const result = await publishVideoReaction(
+    client,
+    { type: "a", value: "30078:deadbeefcafebabe:clip-1", relay: "wss://relay.address" },
+    {
+      pointerEventId: "target-event-id",
+      pointerEventRelay: "wss://event.relay",
+    },
+    {
+      resolveActiveSigner: resolveActiveSignerStub,
+      shouldRequestExtensionPermissions: shouldRequestExtensionPermissionsStub,
+      signEventWithPrivateKey: signEventWithPrivateKeyStub,
+      DEFAULT_NIP07_PERMISSION_METHODS: [],
+    },
+  );
+
+  assert.equal(result.ok, true, "reaction publish should succeed");
+  assert.equal(publishCalls.length, 1, "reaction should publish exactly once");
+
+  const tags = publishCalls[0].event.tags || [];
+  const addressTags = tags.filter((tag) => Array.isArray(tag) && tag[0] === "a");
+  const eventTags = tags.filter((tag) => Array.isArray(tag) && tag[0] === "e");
+
+  assert.deepEqual(addressTags, [[
+    "a",
+    "30078:deadbeefcafebabe:clip-1",
+    "wss://relay.address",
+  ]]);
+
+  assert.deepEqual(eventTags, [["e", "target-event-id", "wss://event.relay"]]);
+});
+
+test("publishVideoReaction aborts when address pointer is missing a resolvable event id", async () => {
+  const actorPubkey = "f".repeat(64);
+  const { client, publishCalls } = createReactionClient({ actorPubkey });
+
+  const result = await publishVideoReaction(
+    client,
+    "30078:abcdef:clip-1",
+    {},
+    {
+      resolveActiveSigner: () => {
+        throw new Error("resolveActiveSigner should not be called when validation fails");
+      },
+      shouldRequestExtensionPermissions: shouldRequestExtensionPermissionsStub,
+      signEventWithPrivateKey: signEventWithPrivateKeyStub,
+      DEFAULT_NIP07_PERMISSION_METHODS: [],
+    },
+  );
+
+  assert.equal(result.ok, false, "reaction publish should fail when event id is missing");
+  assert.equal(result.error, "missing-pointer-event-id");
+  assert.match(
+    result.details,
+    /Unable to resolve event id/, 
+    "error details should explain why the publish failed",
+  );
+  assert.equal(publishCalls.length, 0, "reaction should not publish when validation fails");
+});