diff --git a/keyboards/eco/keymaps/that-canadian/Makefile b/keyboards/eco/keymaps/that_canadian/Makefile
similarity index 100%
rename from keyboards/eco/keymaps/that-canadian/Makefile
rename to keyboards/eco/keymaps/that_canadian/Makefile
diff --git a/keyboards/eco/keymaps/that-canadian/keymap.c b/keyboards/eco/keymaps/that_canadian/keymap.c
similarity index 100%
rename from keyboards/eco/keymaps/that-canadian/keymap.c
rename to keyboards/eco/keymaps/that_canadian/keymap.c
diff --git a/keyboards/eco/keymaps/that-canadian/readme.md b/keyboards/eco/keymaps/that_canadian/readme.md
similarity index 100%
rename from keyboards/eco/keymaps/that-canadian/readme.md
rename to keyboards/eco/keymaps/that_canadian/readme.md
diff --git a/keyboards/eco/readme.md b/keyboards/eco/readme.md
index 819648a2a..8fef3a1ce 100644
--- a/keyboards/eco/readme.md
+++ b/keyboards/eco/readme.md
@@ -10,6 +10,6 @@ Hardware Supported: ECO PCB rev1 Pro Micro
 
 Make example for this keyboard (after setting up your build environment):
 
-    make eco-rev1-that-canadian
+    make eco-rev1-that_canadian
 
 See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.
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