diff --git a/Changes.md b/Changes.md
index 9ad047cde5a..4b53fe3280a 100644
--- a/Changes.md
+++ b/Changes.md
@@ -1,6 +1,11 @@
 1.3.x.x (relative to 1.3.5.0)
 =======
 
+Fixes
+-----
+
+- Windows : Fixed a bug preventing anything except strings from being copied and pasted.
+
 
 1.3.5.0 (relative to 1.3.4.0)
 =======
diff --git a/apps/gui/gui-1.py b/apps/gui/gui-1.py
index d78586d94e4..c72ed27e557 100644
--- a/apps/gui/gui-1.py
+++ b/apps/gui/gui-1.py
@@ -161,7 +161,7 @@ def __qtClipboardContentsChanged( self ) :
 		from Qt import QtWidgets
 
 		text = QtWidgets.QApplication.clipboard().text().encode( "utf-8" )
-		if text :
+		if text and text != str( self.root().getClipboardContents() ).encode( "utf-8" ) :
 			with Gaffer.Signals.BlockedConnection( self.__clipboardContentsChangedConnection ) :
 				self.root().setClipboardContents( IECore.StringData( text ) )