diff --git a/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp b/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp
index cb6117b9..e7f1f12a 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp
@@ -254,7 +254,6 @@ CameraConfiguration::Status RkISP1Path::validate(const CameraSensor *sensor,
 						 StreamConfiguration *cfg)
 {
 	const std::vector<unsigned int> &mbusCodes = sensor->mbusCodes();
-	Size resolution = filterSensorResolution(sensor);
 
 	const StreamConfiguration reqCfg = *cfg;
 	CameraConfiguration::Status status = CameraConfiguration::Valid;
@@ -322,6 +321,8 @@ CameraConfiguration::Status RkISP1Path::validate(const CameraSensor *sensor,
 		minResolution = sensorFormat.size;
 		maxResolution = sensorFormat.size;
 	} else {
+		Size resolution = filterSensorResolution(sensor);
+
 		/*
 		 * Adjust the size based on the sensor resolution and absolute
 		 * limits of the ISP.