diff --git a/src/graphics/Previews.cpp b/src/graphics/Previews.cpp
index aeadfbec86..b1d40baf0a 100644
--- a/src/graphics/Previews.cpp
+++ b/src/graphics/Previews.cpp
@@ -40,10 +40,6 @@ static CacheType preview_cache_;
 }
 
 
-Previews::Previews()
-{}
-
-
 PreviewLoader & Previews::loader(Buffer const & buffer) const
 {
 	CacheType::iterator it = preview_cache_.find(&buffer);
diff --git a/src/graphics/Previews.h b/src/graphics/Previews.h
index 07e8115c71..31ba7ed95a 100644
--- a/src/graphics/Previews.h
+++ b/src/graphics/Previews.h
@@ -26,6 +26,9 @@ class PreviewLoader;
 
 class Previews {
 public:
+	/// This should be a singleton class only instanciated in LyX.cpp.
+	Previews() {}
+
 	/// a wrapper for lyxrc.preview
 	static LyXRC_PreviewStatus status();
 
@@ -44,15 +47,9 @@ public:
 	void generateBufferPreviews(Buffer const & buffer) const;
 
 private:
-	friend class LyX;
 	/// noncopyable
 	Previews(Previews const &);
 	void operator=(Previews const &);
-
-	/** Make the c-tor, d-tor private so we can control how many objects
-	 *  are instantiated.
-	 */
-	Previews();
 };
 
 } // namespace graphics