diff --git a/src/graphics/GraphicsParams.C b/src/graphics/GraphicsParams.C
index 37257bdb52..a4481d7c46 100644
--- a/src/graphics/GraphicsParams.C
+++ b/src/graphics/GraphicsParams.C
@@ -14,6 +14,7 @@
 
 #include "GraphicsParams.h"
 #include "Lsstream.h"
+#include "lyxlength.h"
 
 
 namespace grfx {
diff --git a/src/graphics/GraphicsParams.h b/src/graphics/GraphicsParams.h
index 3d502f57fc..58a4b11a89 100644
--- a/src/graphics/GraphicsParams.h
+++ b/src/graphics/GraphicsParams.h
@@ -20,7 +20,6 @@
 #endif
 
 #include "LString.h"
-#include "lyxlength.h"
 
 
 namespace grfx {
diff --git a/src/insets/insetgraphicsParams.h b/src/insets/insetgraphicsParams.h
index aa7dd27869..dc8e0b508b 100644
--- a/src/insets/insetgraphicsParams.h
+++ b/src/insets/insetgraphicsParams.h
@@ -95,6 +95,9 @@ struct InsetGraphicsParams
 	/// If the token belongs to our parameters, read it.
 	bool Read(LyXLex & lex, string const & token);
 	/// convert 
+  // Only a subset of InsetGraphicsParams is needed for display purposes.
+  // This function also interrogates lyxrc to ascertain whether
+  // to display or not.
 	grfx::GParams asGParams(string const & filepath) const;
 
 private: