diff --git a/headers/private/kernel/util/KMessage.h b/headers/private/kernel/util/KMessage.h
index 557690d9a9..a94490e943 100644
--- a/headers/private/kernel/util/KMessage.h
+++ b/headers/private/kernel/util/KMessage.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * Copyright 2005-2007, Ingo Weinhold, bonefish@users.sf.net. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
@@ -135,7 +135,7 @@ public:
 	status_t ReceiveFrom(port_id fromPort, bigtime_t timeout = -1,
 		port_message_info* messageInfo = NULL);
 
-	void Dump(void (*printFunc)(const char*,...));
+	void Dump(void (*printFunc)(const char*,...)) const;
 
 private:
 	friend class KMessageField;
@@ -201,7 +201,7 @@ public:
 	type_code TypeCode() const;
 	bool HasFixedElementSize() const;
 	int32 ElementSize() const;		// if HasFixedElementSize()
-	
+
 	status_t AddElement(const void *data, int32 size = -1);
 	status_t AddElements(const void *data, int32 count, int32 elementSize = -1);
 	const void *ElementAt(int32 index, int32 *size = NULL) const;
diff --git a/src/system/kernel/messaging/KMessage.cpp b/src/system/kernel/messaging/KMessage.cpp
index 10a31abf9f..1854ba104a 100644
--- a/src/system/kernel/messaging/KMessage.cpp
+++ b/src/system/kernel/messaging/KMessage.cpp
@@ -1,4 +1,4 @@
-/* 
+/*
  * Copyright 2005-2007, Ingo Weinhold, bonefish@users.sf.net.
  * All rights reserved. Distributed under the terms of the MIT License.
  */
@@ -601,7 +601,7 @@ KMessage::ReceiveFrom(port_id fromPort, bigtime_t timeout,
 
 
 void
-KMessage::Dump(void (*printFunc)(const char*,...))
+KMessage::Dump(void (*printFunc)(const char*,...)) const
 {
 	Header* header = _Header();
 	printFunc("KMessage: buffer: %p (size/capacity: %ld/%ld), flags: 0x0lx\n",
@@ -946,7 +946,7 @@ int32
 KMessageField::ElementSize() const
 {
 	KMessage::FieldHeader* header = _Header();
-	return (header ? header->elementSize : -1); 
+	return (header ? header->elementSize : -1);
 }
 
 // AddElement
@@ -992,7 +992,7 @@ int32
 KMessageField::CountElements() const
 {
 	KMessage::FieldHeader* header = _Header();
-	return (header ? header->elementCount : 0); 
+	return (header ? header->elementCount : 0);
 }
 
 // SetTo