diff --git a/README.md b/README.md
index 9d17387..e9b7af0 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ If you wish to install from a downloaded copy instead, install `setuptools` as u
 Minetest stores and transfers map data in *mapblocks*, which are similar to Minecraft's *chunks*. A single mapblock is a cubical, 16x16x16 node area of the map. The lower southwestern corner (-X, -Y, -Z) of a mapblock is always at coordinates divisible by 16, e.g. (0, 16, -48) or the like.
 
 Mapblocks are stored in a *map database*, usually `map.sqlite`.
-Most commands require mapblocks to be already generated to work. This can be acheived by either exploring the area in-game, or by using Minetest's built-in `/emergeblocks` command.
+Most commands require mapblocks to be already generated to work. This can be achieved by either exploring the area in-game, or by using Minetest's built-in `/emergeblocks` command.
 
 #### General usage
 
diff --git a/mapedit/commands.py b/mapedit/commands.py
index f2f5dc0..3ea0979 100644
--- a/mapedit/commands.py
+++ b/mapedit/commands.py
@@ -781,7 +781,7 @@ class MapEditInstance:
     """Verifies certain input and handles the execution of commands."""
 
     STANDARD_WARNING = (
-        "This tool can permanantly damage your Minetest world.\n"
+        "This tool can permanently damage your Minetest world.\n"
         "Always EXIT Minetest and BACK UP the map database before use.")
 
     def __init__(self):