diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8049415..e6c1f78 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
-# Support version 3.6 and above, but use policy settings up to 3.14.
-# 3.6 is needed because of IMPORTED_TARGET in pkg_check_modules().
-cmake_minimum_required(VERSION 3.6...3.14)
+# Support version 3.9 and above, but use policy settings up to 3.14.
+# 3.9 is needed for project description.
+cmake_minimum_required(VERSION 3.9...3.14)
 # Ranges are supported from 3.12, set policy to current for < 3.12.
 if(${CMAKE_VERSION} VERSION_LESS 3.12)
   cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
@@ -8,12 +8,8 @@ endif()
 
 project(remwharead
   VERSION 0.8.5
+  DESCRIPTION "Saves URIs of things you want to remember in a database."
   LANGUAGES CXX)
-# DESCRIPTION was introduced in version 3.9.
-if(NOT (${CMAKE_VERSION} VERSION_LESS 3.9))
-  set(PROJECT_DESCRIPTION
-    "Saves URIs of things you want to remember in a database.")
-endif()
 
 include(GNUInstallDirs)
 
diff --git a/README.adoc b/README.adoc
index 35693e9..b9b60c6 100644
--- a/README.adoc
+++ b/README.adoc
@@ -77,7 +77,7 @@ only.
 
 * Tested OS: Linux
 * C++ compiler (tested: {uri-gcc}[gcc] 7/8/9, {uri-clang}[clang] 6/7)
-* {uri-cmake}[cmake] (at least: 3.6)
+* {uri-cmake}[cmake] (at least: 3.9)
 * {uri-poco}[POCO] (tested: 1.9 / 1.7)
 * Optional:
 ** Manpage: {uri-asciidoc}[asciidoc] (tested: 8.6)
diff --git a/cmake/packages.cmake b/cmake/packages.cmake
index 2f89eba..806fddc 100644
--- a/cmake/packages.cmake
+++ b/cmake/packages.cmake
@@ -3,8 +3,7 @@ set(CPACK_PACKAGE_VERSION_MAJOR ${${PROJECT_NAME}_VERSION_MAJOR})
 set(CPACK_PACKAGE_VERSION_MINOR ${${PROJECT_NAME}_VERSION_MINOR})
 set(CPACK_PACKAGE_VERSION_PATCH ${${PROJECT_NAME}_VERSION_PATCH})
 set(CPACK_PACKAGE_VERSION ${${PROJECT_NAME}_VERSION})
-set(CPACK_PACKAGE_DESCRIPTION_SUMMARY
-  "Saves URIs of things you want to remember in a database. ")
+set(CPACK_PACKAGE_DESCRIPTION_SUMMARY ${PROJECT_DESCRIPTION})
 set(CPACK_PACKAGE_CONTACT "tastytea <tastytea@tastytea.de>")
 set(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")
 set(CPACK_RESOURCE_FILE_README "${PROJECT_SOURCE_DIR}/README.adoc")