diff --git a/headers/os/interface/Layout.h b/headers/os/interface/Layout.h
index 2c74eed295..517368ac7c 100644
--- a/headers/os/interface/Layout.h
+++ b/headers/os/interface/Layout.h
@@ -57,7 +57,7 @@ public:
 
 			void				LayoutItems(bool force = false);
 			BRect				LayoutArea();
-			BLayoutContext*		LayoutContext();
+			BLayoutContext*		LayoutContext() const;
 
 	// Archiving methods
 
diff --git a/src/kits/interface/Layout.cpp b/src/kits/interface/Layout.cpp
index 0b2efabe14..ad3a2bf226 100644
--- a/src/kits/interface/Layout.cpp
+++ b/src/kits/interface/Layout.cpp
@@ -558,7 +558,7 @@ BLayout::ResetLayoutInvalidation()
 
 
 BLayoutContext*
-BLayout::LayoutContext()
+BLayout::LayoutContext() const
 {
 	return fContext;
 }