diff --git a/src/libcamera/include/pipeline_handler.h b/src/libcamera/include/pipeline_handler.h
index 00568c705..fdf8b8db2 100644
--- a/src/libcamera/include/pipeline_handler.h
+++ b/src/libcamera/include/pipeline_handler.h
@@ -16,7 +16,6 @@
 namespace libcamera {
 
 class DeviceEnumerator;
-class PipelineHandlerFactory;
 
 class PipelineHandler
 {