diff --git a/dom/media/ogg/OggCodecState.cpp b/dom/media/ogg/OggCodecState.cpp
index e7e1ca4a3a..d035084113 100644
--- a/dom/media/ogg/OggCodecState.cpp
+++ b/dom/media/ogg/OggCodecState.cpp
@@ -1229,12 +1229,13 @@ already_AddRefed<MediaRawData>
 OpusState::PacketOutAsMediaRawData()
 {
   ogg_packet* packet = PacketPeek();
-  uint32_t frames = 0;
-  const int64_t endFrame = packet->granulepos;
-
   if (!packet) {
     return nullptr;
   }
+
+  uint32_t frames = 0;
+  const int64_t endFrame = packet->granulepos;
+
   if (packet->e_o_s) {
     frames = GetOpusDeltaGP(packet);
   }