diff --git a/cmake/VISPUtils.cmake b/cmake/VISPUtils.cmake
index 521ca00859..0b10ab4cec 100644
--- a/cmake/VISPUtils.cmake
+++ b/cmake/VISPUtils.cmake
@@ -1095,7 +1095,10 @@ macro(vp_add_subdirectories lst subdir)
         file(GLOB __subdirs RELATIVE "${__path}/${subdir}" "${__path}/${subdir}/*")
         foreach(__s ${__subdirs})
           if(EXISTS "${__path}/${subdir}/${__s}/CMakeLists.txt")
-            add_subdirectory("${__path}/${subdir}/${__s}" "${CMAKE_BINARY_DIR}/${subdir}/${__s}")
+            # Add subdir only if ut doesn't exist
+            if(NOT EXISTS "${CMAKE_BINARY_DIR}/${subdir}/${__s}")
+              add_subdirectory("${__path}/${subdir}/${__s}" "${CMAKE_BINARY_DIR}/${subdir}/${__s}")
+            endif()
           endif()
         endforeach()
       endif()