diff --git a/pkg/wakaama/include/objects/security.h b/pkg/wakaama/include/objects/security.h
index a493b5f1b1e6..0ae70e2651da 100644
--- a/pkg/wakaama/include/objects/security.h
+++ b/pkg/wakaama/include/objects/security.h
@@ -119,7 +119,7 @@
  * ~~~~~~~~~~~~~~~~~~~~
  *  $ openssl ec -in keys.der -inform DER -outform DER -pubout | xxd -i
  * ~~~~~~~~~~~~~~~~~~~~
- * 
+ *
  * 3. Get the private part of the key:
  * ~~~~~~~~~~~~~~~~~~~~
  *  $ openssl ec -in keys.der -inform DER -no_public -outform DER | xxd -i