diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
index a08ad6a..5f00500 100644
--- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
+++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
@@ -500,6 +500,9 @@ CameraConfiguration::Status RPiCameraConfiguration::validate()
 		if (fmts.find(V4L2PixelFormat::fromPixelFormat(cfgPixFmt, false)) == fmts.end()) {
 			/* If we cannot find a native format, use a default one. */
 			cfgPixFmt = formats::NV12;
+			cfg.size.width = 1920;
+			cfg.size.height = 1080;
+
 			status = Adjusted;
 		}