diff --git a/cmake/OptionVariables.cmake b/cmake/OptionVariables.cmake
index 0ef92f0..3a6cdaa 100644
--- a/cmake/OptionVariables.cmake
+++ b/cmake/OptionVariables.cmake
@@ -8,7 +8,6 @@
 # |=================================|===============|===============================================|
 # | BUILD_SHARED_LIBS               | Top-Level     | OFF                                           |
 # | BUILD_TESTING                   | Top-Level     | OFF                                           |
-# | CMAKE_INSTALL_INCLUDEDIR        | Top-Level     | include/${package_name}-${PROJECT_VERSION}    |
 # |---------------------------------|---------------|-----------------------------------------------|
 # | CPPTRACE_BUILD_SHARED           | Always        | ${BUILD_SHARED_LIBS}                          |
 # | CPPTRACE_BUILD_TESTING          | Always        | ${BUILD_TESTING} AND ${PROJECT_IS_TOP_LEVEL}  |
@@ -87,14 +86,14 @@ mark_as_advanced(CPPTRACE_BUILD_TESTING)
 # -DCMAKE_INSTALL_INCLUDEDIR=include on the command line would expand to an
 # absolute path with the base being the current CMake directory, leading to
 # unexpected errors.
-if(PROJECT_IS_TOP_LEVEL)
-  set(
-    CMAKE_INSTALL_INCLUDEDIR "include/${package_name}-${PROJECT_VERSION}"
-    CACHE STRING ""
-  )
-  # marked as advanced in GNUInstallDirs version, so we follow their lead
-  mark_as_advanced(CMAKE_INSTALL_INCLUDEDIR)
-endif()
+# if(PROJECT_IS_TOP_LEVEL)
+#   set(
+#     CMAKE_INSTALL_INCLUDEDIR "include/${package_name}-${PROJECT_VERSION}"
+#     CACHE STRING ""
+#   )
+#   # marked as advanced in GNUInstallDirs version, so we follow their lead
+#   mark_as_advanced(CMAKE_INSTALL_INCLUDEDIR)
+# endif()
 
 # do not include earlier or we can't set CMAKE_INSTALL_INCLUDEDIR above
 # include required for CMAKE_INSTALL_LIBDIR below