diff --git a/dist/tools/codespell/ignored_words.txt b/dist/tools/codespell/ignored_words.txt
index 2a6b2f988f..b97cf0cd2e 100644
--- a/dist/tools/codespell/ignored_words.txt
+++ b/dist/tools/codespell/ignored_words.txt
@@ -122,3 +122,6 @@ vas
 
 # Sur (macOS version alias) => Sure, sir
 sur
+
+# unsecure (unlocked, protection disabled) => insecure
+unsecure