diff --git a/writer/CMakeLists.txt b/writer/CMakeLists.txt
index 851b81c5..94eb4499 100644
--- a/writer/CMakeLists.txt
+++ b/writer/CMakeLists.txt
@@ -11,8 +11,6 @@ ADD_LIBRARY(JFJochWriter STATIC
         HDF5DataFile.h  HDF5DataFile.cpp
         HDF5NXmx.cpp      HDF5NXmx.h
         FileWriter.cpp FileWriter.h
-        StreamWriter.cpp StreamWriter.h
-        HDF5DataFile.h  HDF5DataFile.cpp
         HDF5DataFilePlugin.cpp
         HDF5DataFilePlugin.h
         HDF5DataFilePluginROI.cpp