diff --git a/SuperBuild/CMake/External_ossim.cmake b/SuperBuild/CMake/External_ossim.cmake
index 8ee78decfb69b0f753ced7f2018409686e5addd9..5908fad82d93bbc89435be34a4e6a4fee20498ea 100644
--- a/SuperBuild/CMake/External_ossim.cmake
+++ b/SuperBuild/CMake/External_ossim.cmake
@@ -11,8 +11,6 @@ message(STATUS "Setup Ossim...")
 #  set(DEFAULT_USE_SYSTEM_OSSIM  ON)
 #endif()
 
-ADD_SYSTEM_LOCATION(PROJECT ${proj} VARIABLES ${proj}_LIBRARY ${proj}_INCLUDE_DIR)
-
 if(USE_SYSTEM_OSSIM)
   find_package ( Ossim )
   add_custom_target(${proj})
diff --git a/SuperBuild/CMake/External_tiff.cmake b/SuperBuild/CMake/External_tiff.cmake
index 42da7d6a9153f9bd77448a4d951b4c6dca7dfc62..0418899b32e03e6e7757c8bf118f9707ac229356 100644
--- a/SuperBuild/CMake/External_tiff.cmake
+++ b/SuperBuild/CMake/External_tiff.cmake
@@ -5,10 +5,6 @@ set(__EXTERNAL_${proj}__ 1)
 
 message(STATUS "Setup libtiff...")
 
-#ADD_SYSTEM_LOCATION(PROJECT ${proj} VARIABLES ${proj}_LIBRARY ${proj}_INCLUDE_DIR)
-
-#ADD_SYSTEM_PREFIX(PROJECT ${proj})
-
 if(USE_SYSTEM_TIFF)
   find_package ( TIFF )
   add_custom_target(${proj})