diff --git a/scripts/build_cmake/CMakeLists.txt b/scripts/build_cmake/CMakeLists.txt
index cce25ec..a020921 100644
--- a/scripts/build_cmake/CMakeLists.txt
+++ b/scripts/build_cmake/CMakeLists.txt
@@ -18,11 +18,6 @@ option(gui "build cmake-gui")
 
 full_version("${version}")
 
-if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
-  get_filename_component(p "~/cmake-${version}" ABSOLUTE)
-  set_property(CACHE CMAKE_INSTALL_PREFIX PROPERTY VALUE "${p}")
-endif()
-
 message(STATUS "Using CMake ${CMAKE_VERSION} to build CMake ${version} and install to ${CMAKE_INSTALL_PREFIX}")
 
 set(cmake_args
diff --git a/scripts/build_ninja/CMakeLists.txt b/scripts/build_ninja/CMakeLists.txt
index d094f8e..5e7b7bf 100644
--- a/scripts/build_ninja/CMakeLists.txt
+++ b/scripts/build_ninja/CMakeLists.txt
@@ -11,11 +11,6 @@ if(NOT version)
   string(JSON version GET ${_j} ninja)
 endif()
 
-if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
-  file(REAL_PATH "~/ninja-${version}" p EXPAND_TILDE)
-  set_property(CACHE CMAKE_INSTALL_PREFIX PROPERTY VALUE "${p}")
-endif()
-
 set(cmake_args
 -DBUILD_TESTING:BOOL=OFF
 -DCMAKE_BUILD_TYPE=Release
diff --git a/scripts/mpi/CMakeLists.txt b/scripts/mpi/CMakeLists.txt
index 413dea9..f44e8b8 100644
--- a/scripts/mpi/CMakeLists.txt
+++ b/scripts/mpi/CMakeLists.txt
@@ -91,13 +91,6 @@ else()
   endif()
 endif()
 
-if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
-  file(REAL_PATH "~" home EXPAND_TILDE)
-  cmake_path(GET mpi_url STEM n)
-  set_property(CACHE CMAKE_INSTALL_PREFIX PROPERTY VALUE "${home}/${n}")
-endif()
-
-
 # Downloading URL instead of Git avoids very long "autogen" step
 ExternalProject_Add(MPI
 URL ${mpi_url}