diff --git a/Manual_tests.md b/Manual_tests.md
index c874610..2b8df26 100644
--- a/Manual_tests.md
+++ b/Manual_tests.md
@@ -18,6 +18,7 @@ Initializing settings:
   - no log file; switching to source works
 
   - run with an unsupported version. Error message pops up and waits for a key. The app attempts to continue, and doesn't receive the key.
+  - run with a LÖVE v12 release candidate. No errors; it is a supported version. All tests pass.
 
 Code loading:
 * run love with directory; text editor runs
diff --git a/app.lua b/app.lua
index e4b67cc..57533f1 100644
--- a/app.lua
+++ b/app.lua
@@ -8,6 +8,7 @@
 --     and a source editor, while giving each the illusion of complete
 --     control.
 function love.run()
+  App.version_check()
   App.snapshot_love()
   -- Tests always run at the start.
   App.run_tests_and_initialize()