diff --git a/dist/tools/codespell/check.sh b/dist/tools/codespell/check.sh
index 37fd02d2fa..6a281a23cc 100755
--- a/dist/tools/codespell/check.sh
+++ b/dist/tools/codespell/check.sh
@@ -37,8 +37,9 @@ ${CODESPELL_CMD} --version &> /dev/null || {
 
 CODESPELL_OPTS="-q 2"  # Disable "WARNING: Binary file"
 CODESPELL_OPTS+=" --check-hidden"
-# Disable false positives "nd  => and, 2nd", "WAN => WANT", "od => of"
-CODESPELL_OPTS+=" --ignore-words-list=ND,nd,WAN,od"
+# Disable false positives "nd  => and, 2nd", "WAN => WANT", "od => of",
+# "dout => doubt"
+CODESPELL_OPTS+=" --ignore-words-list=ND,nd,wan,od,dout"
 
 # Filter-out all false positive raising "disabled due to" messages.
 ERRORS=$(${CODESPELL_CMD} ${CODESPELL_OPTS} ${FILES} | grep -ve "disabled due to")