diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0bc5b3d02d..b6609b597a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -411,6 +411,10 @@ add_definitions(-DOPENZGY_STATIC)
 add_subdirectory(ThirdParty/openzgy)
 
 list(APPEND THIRD_PARTY_LIBRARIES openzgy)
+set_property(TARGET zfp PROPERTY FOLDER "Thirdparty")
+if(TARGET openzgy-tests)
+  set_property(TARGET openzgy-tests PROPERTY FOLDER "Thirdparty")
+endif()
 
 # ##############################################################################
 # Qt