diff --git a/.gitignore b/.gitignore
index e20de9c420..5bd69004b0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,12 @@ build/user_config_headers
 *~
 # Vim swp files
 .*.swp
+
+# HFS+ uses NFD and automatically converts NFC to NFD, while the file name in
+# the repository uses NFC. So when git looks for the file, it does find it
+# (because NFC gets converted to NFD), but when it checks for files not in the
+# repository, it finds the file name in NFD and can't match it to the file name
+# in NFC.
+#
+# WARNING: The following line MUST use NFD, DO NOT convert it to NFD!
+src/data/keymaps/French (Bépo).keymap