diff --git a/prboom2/CMakeLists.txt b/prboom2/CMakeLists.txt
index 768ba253f..3480e36ae 100644
--- a/prboom2/CMakeLists.txt
+++ b/prboom2/CMakeLists.txt
@@ -213,6 +213,12 @@ if(NOT CMAKE_CROSSCOMPILING)
     export(TARGETS ${CROSS_EXPORTS} FILE "${CMAKE_BINARY_DIR}/ImportExecutables.cmake")
 endif()
 
+if(WIN32)
+    install(FILES COPYING DESTINATION . RENAME COPYING.txt)
+else()
+    install(FILES COPYING DESTINATION "share/doc/${PROJECT_SHORTNAME}")
+endif()
+
 if(WIN32)
     set(CPACK_GENERATOR ZIP)
 elseif(LINUX)