diff --git a/src/libcamera/media_device.cpp b/src/libcamera/media_device.cpp
index ea4608932834..1e9024bf9721 100644
--- a/src/libcamera/media_device.cpp
+++ b/src/libcamera/media_device.cpp
@@ -516,7 +516,7 @@ struct media_v2_interface *MediaDevice::findInterface(const struct media_v2_topo
 {
 	struct media_v2_link *links = reinterpret_cast<struct media_v2_link *>
 						      (topology.ptr_links);
-	unsigned int ifaceId;
+	unsigned int ifaceId = 0;
 	unsigned int i;
 
 	for (i = 0; i < topology.num_links; ++i) {