diff --git a/CMakeLists.txt b/CMakeLists.txt
index 15774d564..ea41d0d2f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -171,7 +171,7 @@ install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/fonts" DESTINATION "${SHAREDIR}")
 install(FILES "README.txt" DESTINATION "${DOCDIR}")
 install(FILES "doc/lua_api.txt" DESTINATION "${DOCDIR}")
 install(FILES "doc/menu_lua_api.txt" DESTINATION "${DOCDIR}")
-install(FILES "doc/mapformat.txt" DESTINATION "${DOCDIR}")
+install(FILES "doc/world_format.txt" DESTINATION "${DOCDIR}")
 install(FILES "minetest.conf.example" DESTINATION "${EXAMPLE_CONF_DIR}")
 
 if(UNIX AND NOT APPLE)
diff --git a/doc/worldformat.txt b/doc/world_format.txt
similarity index 100%
rename from doc/worldformat.txt
rename to doc/world_format.txt