diff --git a/.changeset/fix-event-expiration-validation.md b/.changeset/fix-event-expiration-validation.md
new file mode 100644
index 00000000..14609437
--- /dev/null
+++ b/.changeset/fix-event-expiration-validation.md
@@ -0,0 +1,5 @@
+---
+"nostream": patch
+---
+
+fix: reject expiration timestamp 0 and accept safe-integer timestamps beyond year 2287 in getEventExpiration()
diff --git a/src/utils/event.ts b/src/utils/event.ts
index 78b012b0..9f23ee1f 100644
--- a/src/utils/event.ts
+++ b/src/utils/event.ts
@@ -253,7 +253,7 @@ export const getEventExpiration = (event: Event): number | undefined => {
 
   const expirationTime = Number(rawExpirationTime)
 
-  if (Number.isSafeInteger(expirationTime) && Math.log10(expirationTime) < 10) {
+  if (Number.isSafeInteger(expirationTime) && expirationTime > 0) {
     return expirationTime
   }
 }
diff --git a/test/unit/utils/event.spec.ts b/test/unit/utils/event.spec.ts
index 53cc0f6c..9c747ac2 100644
--- a/test/unit/utils/event.spec.ts
+++ b/test/unit/utils/event.spec.ts
@@ -691,6 +691,16 @@ describe('NIP-40', () => {
       event.tags = [['expiration', 'a']]
       expect(getEventExpiration(event)).to.be.undefined
     })
+
+    it('returns false if expiration is 0', () => {
+      event.tags = [['expiration', '0']]
+      expect(getEventExpiration(event)).to.be.undefined
+    })
+
+    it('returns true if expiration is a safe integer beyond year 2287', () => {
+      event.tags = [['expiration', '10000000000']]
+      expect(getEventExpiration(event)).to.equal(10000000000)
+    })
   })
 
   describe('isExpiredEvent', () => {