diff --git a/.codespellrc b/.codespellrc
deleted file mode 100644
index fd4ab45..0000000
--- a/.codespellrc
+++ /dev/null
@@ -1,5 +0,0 @@
-[codespell]
-skip = .direnv,.git,libopencm3
-ignore-words = ./dev-support/codespell-ignore-words
-check-filenames =
-check-hidden =
diff --git a/dev-support/bin/style b/dev-support/bin/style
index 97b5532..8037475 100755
--- a/dev-support/bin/style
+++ b/dev-support/bin/style
@@ -7,7 +7,6 @@ set -o nounset
 set -o pipefail
 
 ROOT="$(realpath "$(dirname "$0")"/../../)"
-DEVSUPPORT="$(realpath "$(dirname "$0")"/../)"
 CURDIR="$(realpath "$(dirname "$0")")"
 . "$CURDIR/log"
 
@@ -19,7 +18,7 @@ info "Formatting shell scripts"
 shfmt -s -w -l -i 2 -ci -fn $(shfmt -f $(git grep -l '' :/))
 
 info "Chekcking misspellings"
-codespell --skip "$ROOT/.direnv,$ROOT/.git,$ROOT/libopencm3" --ignore-words "$DEVSUPPORT/codespell-ignore-words" "$ROOT"
+codespell --skip "$ROOT/.direnv,$ROOT/.git,$ROOT/libopencm3,*.c,*.h" "$ROOT"
 
 info "Formatting c files"
 # shellcheck disable=SC2046
diff --git a/dev-support/codespell-ignore-words b/dev-support/codespell-ignore-words
deleted file mode 100644
index de8f0e1..0000000
--- a/dev-support/codespell-ignore-words
+++ /dev/null
@@ -1,4 +0,0 @@
-ake
-ege
-hsi
-endianess