--- a/Resources/CMake/OrthancFrameworkConfiguration.cmake	Fri Jul 20 11:01:33 2018 +0200
+++ b/Resources/CMake/OrthancFrameworkConfiguration.cmake	Tue Jul 24 10:39:08 2018 +0200
@@ -293,16 +293,22 @@
 
   list(APPEND ORTHANC_CORE_SOURCES_INTERNAL
     ${ORTHANC_ROOT}/Core/Compression/DeflateBaseCompressor.cpp
-    ${ORTHANC_ROOT}/Core/Compression/HierarchicalZipWriter.cpp
     ${ORTHANC_ROOT}/Core/Compression/GzipCompressor.cpp
-    ${ORTHANC_ROOT}/Core/Compression/ZipWriter.cpp
     ${ORTHANC_ROOT}/Core/Compression/ZlibCompressor.cpp
     )
 
   if (NOT ORTHANC_SANDBOXED)
     list(APPEND ORTHANC_CORE_SOURCES_INTERNAL
+      ${ORTHANC_ROOT}/Core/Compression/HierarchicalZipWriter.cpp
+      ${ORTHANC_ROOT}/Core/Compression/ZipWriter.cpp
       ${ORTHANC_ROOT}/Core/FileStorage/StorageAccessor.cpp
       )
+
+    list(APPEND ORTHANC_CORE_SOURCES_DEPENDENCIES
+      # This is the minizip distribution to create ZIP files using zlib
+      ${ORTHANC_ROOT}/Resources/ThirdParty/minizip/ioapi.c
+      ${ORTHANC_ROOT}/Resources/ThirdParty/minizip/zip.c
+      )
   endif()
 endif()
 
@@ -560,15 +566,6 @@
   )  
 
 
-if (ENABLE_ZLIB)
-  list(APPEND ORTHANC_CORE_SOURCES_DEPENDENCIES
-    # This is the minizip distribution to create ZIP files using zlib
-    ${ORTHANC_ROOT}/Resources/ThirdParty/minizip/ioapi.c
-    ${ORTHANC_ROOT}/Resources/ThirdParty/minizip/zip.c
-    )
-endif()
-
-
 set(ORTHANC_CORE_SOURCES
   ${ORTHANC_CORE_SOURCES_INTERNAL}
   ${ORTHANC_CORE_SOURCES_DEPENDENCIES}