ModsJava
Don't Do That
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
Don't Do That
Stops Minecraft from doing certain annoying things.
Current features:
- Makes chat history a lot longer (65536 messages instead of 100)
- "Removes" the chat command character limit (2147483647 characters instead of 256)
- Makes chat suggestions more lenient
- Identifier suggestions suggest all namespaces instead of just minecraft
- Literal suggestions match if they contain the input instead of just starting with it
- Makes command exceptions log errors if not handled by the command
- Prevents deletion of unknown options from your options.txt file
- DDT stores unread lines from options.txt and writes them at the end of the file when saving
- Removes multiple annoying popups
- Here be dragons
- Resource/Data pack version mismatch
- Removes arbitrary minimum loading times on certain loading screens
- Makes deleting worlds send them to the recycling bin instead of deleting them (if possible)
- Makes "Pinned" resource packs able to be moved/disabled (server provided or otherwise)
- Allows GUIs to be opened while standing in portals
Pre 1.21.9 Only (added to vanilla in 1.21.9)
- Makes overlapping keybindings work
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.9, 1.21.5, 1.21.8
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
File checked by MCModsHub
- Ships as dontDoThat-1.4.1+1.21.9.jar — drop this file into the mods folder
- Download size: 35 KB
- Download link checked 27 Sept 2026 — working
These come from our own check of the pack file, not from the source page.