diff --git a/src/include/lwip/prot/ethernet.h b/src/include/lwip/prot/ethernet.h
index 4a29af8a..6ebc1008 100644
--- a/src/include/lwip/prot/ethernet.h
+++ b/src/include/lwip/prot/ethernet.h
@@ -1,6 +1,6 @@
 /**
  * @file
- * UDP protocol definitions
+ * Ethernet protocol definitions
  */
 
 /*
diff --git a/src/include/lwip/prot/mld6.h b/src/include/lwip/prot/mld6.h
index 8755d51a..86ccc8fb 100644
--- a/src/include/lwip/prot/mld6.h
+++ b/src/include/lwip/prot/mld6.h
@@ -1,6 +1,6 @@
 /**
  * @file
- * UDP protocol definitions
+ * MLD6 protocol definitions
  */
 
 /*
diff --git a/src/include/lwip/prot/nd6.h b/src/include/lwip/prot/nd6.h
index 0a0dde48..eae3d28e 100644
--- a/src/include/lwip/prot/nd6.h
+++ b/src/include/lwip/prot/nd6.h
@@ -1,6 +1,6 @@
 /**
  * @file
- * UDP protocol definitions
+ * ND6 protocol definitions
  */
 
 /*