diff --git a/src/libcamera/pipeline/rpi/common/pipeline_base.h b/src/libcamera/pipeline/rpi/common/pipeline_base.h
index 75babbe17f31..9d23a1994f00 100644
--- a/src/libcamera/pipeline/rpi/common/pipeline_base.h
+++ b/src/libcamera/pipeline/rpi/common/pipeline_base.h
@@ -135,8 +135,8 @@ public:
 	IPACameraSensorInfo sensorInfo_;
 
 	struct CropParams {
-		CropParams(Rectangle ispCrop_, Size ispMinCropSize_)
-			: ispCrop(ispCrop_), ispMinCropSize(ispMinCropSize_)
+		CropParams(Rectangle ispCrop_, Size ispMinCropSize_, unsigned int ispIndex_)
+			: ispCrop(ispCrop_), ispMinCropSize(ispMinCropSize_), ispIndex(ispIndex_)
 		{
 		}
 
@@ -148,6 +148,8 @@ public:
 		Rectangle ispCrop;
 		/* Minimum crop size in ISP output pixels */
 		Size ispMinCropSize;
+		/* Index of the ISP output channel for this crop */
+		unsigned int ispIndex;
 	};
 
 	/* Mapping of CropParams keyed by the output stream order in CameraConfiguration */
diff --git a/src/libcamera/pipeline/rpi/vc4/vc4.cpp b/src/libcamera/pipeline/rpi/vc4/vc4.cpp
index 8080f55a1cf4..cfed214ddbd4 100644
--- a/src/libcamera/pipeline/rpi/vc4/vc4.cpp
+++ b/src/libcamera/pipeline/rpi/vc4/vc4.cpp
@@ -714,7 +714,7 @@ int Vc4CameraData::platformConfigure(const RPi::RPiCameraConfiguration *rpiConfi
 	 */
 	cropParams_.emplace(std::piecewise_construct,
 			    std::forward_as_tuple(0),
-			    std::forward_as_tuple(ispCrop, testCrop.size()));
+			    std::forward_as_tuple(ispCrop, testCrop.size(), 0));
 
 	return 0;
 }