diff --git a/src/darwin/Framework/CHIP/MTRCertificates.mm b/src/darwin/Framework/CHIP/MTRCertificates.mm
index 5837a50a3fe21a..b153cf4442b373 100644
--- a/src/darwin/Framework/CHIP/MTRCertificates.mm
+++ b/src/darwin/Framework/CHIP/MTRCertificates.mm
@@ -186,7 +186,7 @@ + (BOOL)isCertificate:(MTRCertificateDERBytes)certificate1 equalTo:(MTRCertifica
         MTR_LOG_ERROR("Can't extract public key from second certificate: %s", ErrorStr(err));
         return NO;
     }
-    P256PublicKeySpan keySpan2(pubKey1.ConstBytes());
+    P256PublicKeySpan keySpan2(pubKey2.ConstBytes());
 
     if (!keySpan1.data_equal(keySpan2)) {
         return NO;