diff --git a/CMakeLists.txt b/CMakeLists.txt
index 96ebfbff9d..7a0f794319 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -152,13 +152,15 @@ if (ENABLE_ALL_THE_DEBUG_MACROS)
     include(all_the_debug_macros)
 endif(ENABLE_ALL_THE_DEBUG_MACROS)
 
+set(CMAKE_STAGING_PREFIX "${CMAKE_BINARY_DIR}/Root")
+set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/Root")
+set(CMAKE_INSTALL_DATAROOTDIR res)
+set(CMAKE_INSTALL_INCLUDEDIR usr/include)
+set(CMAKE_INSTALL_LIBDIR usr/lib)
+
 configure_file(AK/Debug.h.in AK/Debug.h @ONLY)
 configure_file(Kernel/Debug.h.in Kernel/Debug.h @ONLY)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/AK/Debug.h DESTINATION usr/include/AK)
-
-set(CMAKE_STAGING_PREFIX ${CMAKE_BINARY_DIR}/Root)
-set(CMAKE_INSTALL_PREFIX ${CMAKE_BINARY_DIR}/Root)
-set(CMAKE_INSTALL_DATAROOTDIR ${CMAKE_BINARY_DIR}/Root/res)
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/AK/Debug.h" DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/AK")
 
 # We disable it completely because it makes cmake very spammy.
 # This will need to be revisited when the Loader supports RPATH/RUN_PATH.
diff --git a/Meta/CMake/code_generators.cmake b/Meta/CMake/code_generators.cmake
index 20c7ddccfa..e54a4c1023 100644
--- a/Meta/CMake/code_generators.cmake
+++ b/Meta/CMake/code_generators.cmake
@@ -37,7 +37,7 @@ function(compile_ipc source output)
     #       https://cmake.org/cmake/help/v3.23/command/cmake_path.html#relative-path
     string(LENGTH ${SerenityOS_SOURCE_DIR} root_source_dir_length)
     string(SUBSTRING ${CMAKE_CURRENT_SOURCE_DIR} ${root_source_dir_length} -1 current_source_dir_relative)
-    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${output} DESTINATION usr/include${current_source_dir_relative} OPTIONAL)
+    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${output} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${current_source_dir_relative}" OPTIONAL)
 endfunction()
 
 function(generate_state_machine source header)
diff --git a/Meta/CMake/utils.cmake b/Meta/CMake/utils.cmake
index 1bfc3b8ea2..5da86a1d3a 100644
--- a/Meta/CMake/utils.cmake
+++ b/Meta/CMake/utils.cmake
@@ -6,7 +6,7 @@ function(serenity_install_headers target_name)
     file(GLOB_RECURSE headers RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} "*.h")
     foreach(header ${headers})
         get_filename_component(subdirectory ${header} DIRECTORY)
-        install(FILES ${header} DESTINATION usr/include/${target_name}/${subdirectory} OPTIONAL)
+        install(FILES ${header} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${target_name}/${subdirectory}" OPTIONAL)
     endforeach()
 endfunction()
 
@@ -39,7 +39,7 @@ function(serenity_lib target_name fs_name)
     add_library(${target_name} SHARED ${SOURCES} ${GENERATED_SOURCES})
     set_target_properties(${target_name} PROPERTIES EXCLUDE_FROM_ALL TRUE)
     set_target_properties(${target_name} PROPERTIES VERSION "serenity")
-    install(TARGETS ${target_name} DESTINATION usr/lib OPTIONAL)
+    install(TARGETS ${target_name} DESTINATION ${CMAKE_INSTALL_LIBDIR} OPTIONAL)
     set_target_properties(${target_name} PROPERTIES OUTPUT_NAME ${fs_name})
     serenity_generated_sources(${target_name})
 endfunction()
@@ -50,7 +50,7 @@ function(serenity_lib_static target_name fs_name)
     add_library(${target_name} STATIC ${SOURCES} ${GENERATED_SOURCES})
     set_target_properties(${target_name} PROPERTIES EXCLUDE_FROM_ALL TRUE)
     set_target_properties(${target_name} PROPERTIES VERSION "serenity")
-    install(TARGETS ${target_name} DESTINATION usr/lib OPTIONAL)
+    install(TARGETS ${target_name} DESTINATION ${CMAKE_INSTALL_LIBDIR} OPTIONAL)
     set_target_properties(${target_name} PROPERTIES OUTPUT_NAME ${fs_name})
     serenity_generated_sources(${target_name})
 endfunction()
@@ -60,7 +60,7 @@ function(serenity_libc target_name fs_name)
     serenity_install_sources()
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nostdlib -fpic")
     add_library(${target_name} SHARED ${SOURCES})
-    install(TARGETS ${target_name} DESTINATION usr/lib)
+    install(TARGETS ${target_name} DESTINATION ${CMAKE_INSTALL_LIBDIR})
     set_target_properties(${target_name} PROPERTIES OUTPUT_NAME ${fs_name})
     # Avoid creating a dependency cycle between system libraries and the C++ standard library. This is necessary
     # to ensure that initialization functions will be called in the right order (libc++ must come after LibPthread).