diff --git a/Modules/FindCABLE.cmake b/Modules/FindCABLE.cmake
index 4f163fefa..0e2ff0f67 100644
--- a/Modules/FindCABLE.cmake
+++ b/Modules/FindCABLE.cmake
@@ -22,6 +22,7 @@ IF(CABLE_BUILD_DIR)
                LIBRARY_OUTPUT_PATH
                EXECUTABLE_OUTPUT_PATH
                MAKECOMMAND
+               CMAKE_INSTALL_PREFIX
              INCLUDE_INTERNALS
                CABLE_LIBRARY_PATH
                CABLE_EXECUTABLE_PATH)